Add API to get domain #3789

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	2m 37s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 25s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 28s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 27s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 34s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	5m 36s
Dry Run Goreleaser	7m 23s
Test Getting started	6m 1s
Check Go Generate (datacatalog) / Go Generate	1m 15s
Check Go Generate (flytecopilot) / Go Generate	1m 26s
Check Go Generate (flyteadmin) / Go Generate	1m 46s
Check Go Generate (flytectl) / Go Generate	1m 13s
Check Go Generate (flytepropeller) / Go Generate	1m 41s
Lint (datacatalog) / Run Lint	2m 2s
Lint (flytectl) / Run Lint	1m 38s
Lint (flyteadmin) / Run Lint	2m 52s
Lint (flyteplugins) / Run Lint	2m 27s
Lint (flytestdlib) / Run Lint	2m 6s
Lint (flytepropeller) / Run Lint	2m 37s
Lint (flyteidl) / Run Lint	1m 36s
Unit Tests (datacatalog) / Run Unit Test	2m 39s
Unit Tests (flyteadmin) / Run Unit Test	4m 16s
Unit Tests (flytectl) / Run Unit Test	3m 16s
Unit Tests (flyteplugins) / Run Unit Test	3m 41s
Unit Tests (flytecopilot) / Run Unit Test	2m 11s
Unit Tests (flytepropeller) / Run Unit Test	3m 57s
Unit Tests (flytestdlib) / Run Unit Test	3m 17s
Integration Test (flyteadmin) / Integration tests	5m 53s
	1h 33m 21s

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