script CLI helm installation for OCP

[Fortune-Ndlovu]

Issue: RHIDP-2706 - script CLI helm installation for OCP

FYI this script has gone through iterative improvements and has been approved #27 - more feedback is welcome on this PR.

Continued from RHIDP-2614 re: redhat-developer/red-hat-developers-documentation-rhdh#287

Instead of giving people 20 steps to iterate though, AND having the same steps captured by QE when doing install validation tests, we should instead:

• create a script that can handle both install paths
• link to that from the docs
• reuse it in testing

The script does the following:

• detect if oc is installed; fail if not found and report error to the user with a call to action re: installing it
• detect if the user is logged into a cluster and fail if not with a call to action (oc command to log in)
• if cluster router base can be detected, use that value to update the helm chart installation; if not, fail and request user pass in command line flag as cluster router base could not be detected (can test this failure case with dev sandbox; can test passing case with clusterbot)

The script should be stored in https://github.com/redhat-developer/rhdh-chart/ using a similar documentation/script approach to

• https://github.com/janus-idp/operator/tree/main/.rhdh/docs

• https://github.com/janus-idp/operator/tree/main/.rhdh/scripts

• I have also Tested on Dev Sandbox and ClusterBot LGTM

Checklist

• Chart version bumped in Chart.yaml according to semver.
• Variables are documented in the values.yaml and added to the README.md. The pre-commit utility can be used to generate the necessary content. Use pre-commit run -a to apply changes.
• JSON Schema template updated and re-generated the raw schema via pre-commit hook.
• List tests pass for Chart using the Chart Testing tool and the ct lint command.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[nickboldt]

Suggested change

	This script simplifies and automates the installation process of Helm charts on the OpenShift Container Platform (OCP) clusters.
	This script automates the installation of Helm charts on OpenShift Container Platform (OCP).

[nickboldt]

Suggested change

	It ensures that the user is logged into a cluster and attempts to detect the cluster router base, updating the Helm chart configuration accordingly.
	It ensures that the user is logged in, and detects the cluster router base to configure the Helm chart.

[nickboldt]

Suggested change

	$0 --router-base example.com # Manually specifies the router base and installs the Helm chart
	$0 --router-base apps.example.com # Manually specifies the router base and installs the Helm chart

[nickboldt]

using a local path reference to the charts folder will requires that this repo be cloned to be useable.

Is there a way to achieve the same thing from a single command, like https://github.com/rhdh-bot/openshift-helm-charts/blob/rhdh-1-rhel-9/installation/install.sh ? that would mitigate some of the docs team's concerns about usability