Add API to get domain #3596

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	2m 45s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 18s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 26s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 7s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	5m 59s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 25s
Test Getting started	5m 29s
Dry Run Goreleaser	7m 33s
Lint (datacatalog) / Run Lint	2m 23s
Lint (flytectl) / Run Lint	2m 31s
Lint (flyteadmin) / Run Lint	2m 57s
Lint (flyteplugins) / Run Lint	2m 56s
Lint (flyteidl) / Run Lint	1m 49s
Lint (flytepropeller) / Run Lint	3m 8s
Check Go Generate (datacatalog) / Go Generate	1m 29s
Check Go Generate (flyteadmin) / Go Generate	2m 26s
Check Go Generate (flytecopilot) / Go Generate	1m 39s
Lint (flytestdlib) / Run Lint	2m 29s
Check Go Generate (flytectl) / Go Generate	2m 22s
Check Go Generate (flytepropeller) / Go Generate	2m 7s
Unit Tests (datacatalog) / Run Unit Test	3m 8s
Unit Tests (flyteadmin) / Run Unit Test	4m 22s
Unit Tests (flytecopilot) / Run Unit Test	2m 33s
Unit Tests (flyteplugins) / Run Unit Test	3m 56s
Unit Tests (flytectl) / Run Unit Test	3m 17s
Unit Tests (flytepropeller) / Run Unit Test	4m 8s
Unit Tests (flytestdlib) / Run Unit Test	3m 47s
Integration Test (flyteadmin) / Integration tests	6m 8s
	1h 40m 38s

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