Add API to get domain #3633

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	2m 32s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 28s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 4s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 15s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	5m 58s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 21s
Dry Run Goreleaser	8m 11s
Test Getting started	6m 56s
Check Go Generate (flytectl) / Go Generate	1m 54s
Check Go Generate (flytecopilot) / Go Generate	1m 43s
Check Go Generate (flyteadmin) / Go Generate	2m 24s
Check Go Generate (datacatalog) / Go Generate	1m 42s
Check Go Generate (flytepropeller) / Go Generate	2m 22s
Lint (flytectl) / Run Lint	2m 28s
Lint (flyteadmin) / Run Lint	2m 55s
Lint (datacatalog) / Run Lint	2m 37s
Lint (flyteidl) / Run Lint	1m 40s
Lint (flyteplugins) / Run Lint	2m 54s
Lint (flytestdlib) / Run Lint	2m 21s
Lint (flytepropeller) / Run Lint	2m 51s
Unit Tests (datacatalog) / Run Unit Test	3m 2s
Unit Tests (flytecopilot) / Run Unit Test	2m 35s
Unit Tests (flytectl) / Run Unit Test	3m 20s
Unit Tests (flyteadmin) / Run Unit Test	4m 12s
Unit Tests (flyteplugins) / Run Unit Test	3m 44s
Unit Tests (flytepropeller) / Run Unit Test	4m 8s
Unit Tests (flytestdlib) / Run Unit Test	3m 40s
Integration Test (flyteadmin) / Integration tests	3m 45s
	1h 39m 3s

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