Ensure IPC perm are updated

[julien-lebot]

What does this PR do?

This PR adds the missing ipc_perm.pem file to the list of files the installer should update the permission.

Motivation

All files should have their permissions updated when changing user.

Describe how you validated your changes

Covered in E2E test but with a big delta (detected this when LAST_STABLE was pointing to 7.62 when we are working on 7.64), so manual QA was also done.

Possible Drawbacks / Trade-offs

Additional Notes

[agent-platform-auto-pr]

Uncompressed package size comparison

Comparison with ancestor f6ffa8c13bd9e7b52b2caf2dfd59ab625a18dfe5

Diff per package

package	diff	status	size	ancestor	threshold
datadog-agent-aarch64-rpm	0.00MB	✅	874.72MB	874.72MB	0.50MB
datadog-agent-amd64-deb	0.00MB	✅	877.21MB	877.21MB	0.50MB
datadog-agent-arm64-deb	0.00MB	✅	865.00MB	865.00MB	0.50MB
datadog-dogstatsd-amd64-deb	0.00MB	✅	59.02MB	59.02MB	0.50MB
datadog-dogstatsd-x86_64-rpm	0.00MB	✅	59.10MB	59.10MB	0.50MB
datadog-dogstatsd-x86_64-suse	0.00MB	✅	59.10MB	59.10MB	0.50MB
datadog-dogstatsd-arm64-deb	0.00MB	✅	56.51MB	56.51MB	0.50MB
datadog-heroku-agent-amd64-deb	0.00MB	✅	456.50MB	456.50MB	0.50MB
datadog-iot-agent-amd64-deb	0.00MB	✅	93.87MB	93.87MB	0.50MB
datadog-iot-agent-x86_64-rpm	0.00MB	✅	93.94MB	93.94MB	0.50MB
datadog-iot-agent-x86_64-suse	0.00MB	✅	93.94MB	93.94MB	0.50MB
datadog-iot-agent-arm64-deb	0.00MB	✅	89.92MB	89.92MB	0.50MB
datadog-iot-agent-aarch64-rpm	0.00MB	✅	89.99MB	89.99MB	0.50MB
datadog-agent-x86_64-rpm	-0.00MB	✅	886.95MB	886.95MB	0.50MB
datadog-agent-x86_64-suse	-0.00MB	✅	886.95MB	886.95MB	0.50MB

Decision

✅ Passed

[agent-platform-auto-pr]

[Fast Unit Tests Report]

On pipeline 54786149 (CI Visibility). The following jobs did not run any unit tests:

Jobs:

• tests_deb-arm64-py3
• tests_deb-x64-py3
• tests_flavor_dogstatsd_deb-x64
• tests_flavor_heroku_deb-x64
• tests_flavor_iot_deb-x64
• tests_rpm-arm64-py3
• tests_rpm-x64-py3
• tests_windows-x64

If you modified Go files and expected unit tests to run in these jobs, please double check the job logs. If you think tests should have been executed reach out to #agent-devx-help

[cit-pr-commenter]

Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: f1edd3b1-81d3-4250-a9ad-1757d8df56ae

Baseline: f6ffa8c
Comparison: 1ac8cac
Diff

Optimization Goals: ✅ No significant changes detected

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
➖	quality_gate_idle_all_features	memory utilization	+0.48	[+0.42, +0.55]	1	Logs bounds checks dashboard
➖	quality_gate_idle	memory utilization	+0.31	[+0.26, +0.35]	1	Logs bounds checks dashboard
➖	file_tree	memory utilization	+0.06	[-0.01, +0.12]	1	Logs
➖	file_to_blackhole_0ms_latency	egress throughput	+0.03	[-0.84, +0.90]	1	Logs
➖	file_to_blackhole_1000ms_latency	egress throughput	+0.02	[-0.76, +0.80]	1	Logs
➖	file_to_blackhole_500ms_latency	egress throughput	+0.02	[-0.77, +0.80]	1	Logs
➖	tcp_dd_logs_filter_exclude	ingress throughput	+0.02	[-0.01, +0.04]	1	Logs
➖	uds_dogstatsd_to_api	ingress throughput	+0.00	[-0.27, +0.28]	1	Logs
➖	file_to_blackhole_100ms_latency	egress throughput	+0.00	[-0.63, +0.63]	1	Logs
➖	file_to_blackhole_0ms_latency_http2	egress throughput	+0.00	[-0.90, +0.90]	1	Logs
➖	file_to_blackhole_300ms_latency	egress throughput	-0.00	[-0.64, +0.63]	1	Logs
➖	file_to_blackhole_0ms_latency_http1	egress throughput	-0.02	[-0.89, +0.85]	1	Logs
➖	tcp_syslog_to_blackhole	ingress throughput	-0.15	[-0.23, -0.07]	1	Logs
➖	file_to_blackhole_1000ms_latency_linear_load	egress throughput	-0.49	[-0.95, -0.02]	1	Logs
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	-1.26	[-2.14, -0.37]	1	Logs
➖	quality_gate_logs	% cpu utilization	-2.93	[-6.02, +0.17]	1	Logs

Bounds Checks: ✅ Passed

perf	experiment	bounds_check_name	replicates_passed	links
✅	file_to_blackhole_0ms_latency	lost_bytes	10/10
✅	file_to_blackhole_0ms_latency	memory_usage	10/10
✅	file_to_blackhole_0ms_latency_http1	lost_bytes	10/10
✅	file_to_blackhole_0ms_latency_http1	memory_usage	10/10
✅	file_to_blackhole_0ms_latency_http2	lost_bytes	10/10
✅	file_to_blackhole_0ms_latency_http2	memory_usage	10/10
✅	file_to_blackhole_1000ms_latency	memory_usage	10/10
✅	file_to_blackhole_1000ms_latency_linear_load	memory_usage	10/10
✅	file_to_blackhole_100ms_latency	lost_bytes	10/10
✅	file_to_blackhole_100ms_latency	memory_usage	10/10
✅	file_to_blackhole_300ms_latency	lost_bytes	10/10
✅	file_to_blackhole_300ms_latency	memory_usage	10/10
✅	file_to_blackhole_500ms_latency	lost_bytes	10/10
✅	file_to_blackhole_500ms_latency	memory_usage	10/10
✅	quality_gate_idle	intake_connections	10/10	bounds checks dashboard
✅	quality_gate_idle	memory_usage	10/10	bounds checks dashboard
✅	quality_gate_idle_all_features	intake_connections	10/10	bounds checks dashboard
✅	quality_gate_idle_all_features	memory_usage	10/10	bounds checks dashboard
✅	quality_gate_logs	intake_connections	10/10
✅	quality_gate_logs	lost_bytes	10/10
✅	quality_gate_logs	memory_usage	10/10

Explanation

Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%

Performance changes are noted in the perf column of each table:

• ✅ = significantly better comparison variant performance
• ❌ = significantly worse comparison variant performance
• ➖ = no significant change in performance

A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".

For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:

1. Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.

2. Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.

3. Its configuration does not mark it "erratic".

CI Pass/Fail Decision

✅ Passed. All Quality Gates passed.

• quality_gate_idle, bounds check memory_usage: 10/10 replicas passed. Gate passed.
• quality_gate_idle, bounds check intake_connections: 10/10 replicas passed. Gate passed.
• quality_gate_logs, bounds check memory_usage: 10/10 replicas passed. Gate passed.
• quality_gate_logs, bounds check lost_bytes: 10/10 replicas passed. Gate passed.
• quality_gate_logs, bounds check intake_connections: 10/10 replicas passed. Gate passed.
• quality_gate_idle_all_features, bounds check memory_usage: 10/10 replicas passed. Gate passed.
• quality_gate_idle_all_features, bounds check intake_connections: 10/10 replicas passed. Gate passed.

[julien-lebot]

Full pipeline: https://gitlab.ddbuild.io/DataDog/datadog-agent/-/pipelines/54732024

[buraizu]

Approving with a minor update requested

[clarkb7]

The CleanupFiles action only runs on full uninstall, ConfigCustomActions.cs is what is deleting auth_token between installs and needs to be updated to remove ipc_cert.pem, too. See also its e2e test.