Fix cluster pool assignment validation #4832

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 56s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	3m 58s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 39s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	3m 56s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	5m 56s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 32s
Dry Run Goreleaser	7m 49s
Test Getting started	8m 6s
Lint (datacatalog) / Run Lint	2m 17s
Lint (flyteadmin) / Run Lint	3m 0s
Lint (flytectl) / Run Lint	2m 26s
Lint (flyteplugins) / Run Lint	2m 50s
Lint (flyteidl) / Run Lint	1m 46s
Lint (flytepropeller) / Run Lint	1m 23s
Check Go Generate (datacatalog) / Go Generate	1m 29s
Lint (flytestdlib) / Run Lint	2m 26s
Check Go Generate (flyteadmin) / Go Generate	2m 6s
Check Go Generate (flytecopilot) / Go Generate	1m 21s
Check Go Generate (flytectl) / Go Generate	2m 1s
Check Go Generate (flytepropeller) / Go Generate	2m 18s
Unit Tests (datacatalog) / Run Unit Test	2m 57s
Unit Tests (flyteadmin) / Run Unit Test	4m 35s
Unit Tests (flytecopilot) / Run Unit Test	2m 27s
Unit Tests (flytectl) / Run Unit Test	3m 31s
Unit Tests (flyteplugins) / Run Unit Test	3m 41s
Unit Tests (flytepropeller) / Run Unit Test	4m 11s
Unit Tests (flytestdlib) / Run Unit Test	3m 36s
Integration Test (flyteadmin) / Integration tests	3m 52s
	1h 40m 6s

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