[Docs][flyteagent] Improve Agent Secret Setup #4749

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 54s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 16s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 17s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 2s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	22s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 13s
Dry Run Goreleaser	7m 41s
Test Getting started	6m 33s
Check Go Generate (datacatalog) / Go Generate	1m 26s
Check Go Generate (flytecopilot) / Go Generate	1m 14s
Check Go Generate (flyteadmin) / Go Generate	2m 0s
Check Go Generate (flytepropeller) / Go Generate	1m 57s
Check Go Generate (flytectl) / Go Generate	1m 53s
Lint (datacatalog) / Run Lint	2m 15s
Lint (flyteadmin) / Run Lint	2m 54s
Lint (flytectl) / Run Lint	2m 21s
Lint (flyteidl) / Run Lint	1m 50s
Lint (flyteplugins) / Run Lint	2m 53s
Lint (flytepropeller) / Run Lint	3m 3s
Lint (flytestdlib) / Run Lint	2m 25s
Unit Tests (datacatalog) / Run Unit Test	2m 47s
Unit Tests (flyteadmin) / Run Unit Test	4m 17s
Unit Tests (flytecopilot) / Run Unit Test	2m 38s
Unit Tests (flyteplugins) / Run Unit Test	3m 42s
Unit Tests (flytectl) / Run Unit Test	3m 28s
Unit Tests (flytestdlib) / Run Unit Test	3m 29s
Unit Tests (flytepropeller) / Run Unit Test	4m 4s
Integration Test (flyteadmin) / Integration tests	6m 4s
	1h 34m 59s

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