Refactor flyteadmin to pass proto structs as pointers #4524

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 46s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 26s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 9s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 5s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	5m 23s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 10s
Dry Run Goreleaser	7m 23s
Test Getting started	5m 46s
Check Go Generate (datacatalog) / Go Generate	42s
Check Go Generate (flyteadmin) / Go Generate	1m 13s
Check Go Generate (flytecopilot) / Go Generate	31s
Check Go Generate (flytectl) / Go Generate	41s
Check Go Generate (flytepropeller) / Go Generate	1m 23s
Unit Tests (datacatalog) / Run Unit Test	1m 27s
Unit Tests (flyteadmin) / Run Unit Test	2m 48s
Lint (datacatalog) / Run Lint	1m 35s
Lint (flyteadmin) / Run Lint	2m 0s
Lint (flytectl) / Run Lint	1m 10s
Lint (flyteidl) / Run Lint	53s
Lint (flyteplugins) / Run Lint	2m 0s
Lint (flytepropeller) / Run Lint	2m 7s
Lint (flytestdlib) / Run Lint	1m 52s
Unit Tests (flytecopilot) / Run Unit Test	1m 15s
Unit Tests (flytectl) / Run Unit Test	1m 21s
Unit Tests (flyteplugins) / Run Unit Test	2m 14s
Unit Tests (flytepropeller) / Run Unit Test	2m 43s
Unit Tests (flytestdlib) / Run Unit Test	2m 9s
Integration Test (flyteadmin) / Integration tests	5m 56s
	1h 18m 9s

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