Add nodeName template var and update doc #5819

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	5m 5s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 25s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 14s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 15s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	6m 35s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 32s
Dry Run Goreleaser	10m 37s
Test Getting started	12m 39s
Lint (datacatalog) / Run Lint	2m 30s
Lint (flytecopilot) / Run Lint	2m 3s
Lint (flytectl) / Run Lint	2m 36s
Lint (flyteadmin) / Run Lint	6m 41s
Lint (flyteidl) / Run Lint	1m 50s
Lint (flyteplugins) / Run Lint	3m 1s
Lint (flytestdlib) / Run Lint	2m 41s
Lint (flytepropeller) / Run Lint	3m 7s
Unit Tests (datacatalog) / Run Unit Test	2m 58s
Unit Tests (flyteadmin) / Run Unit Test	4m 32s
Check Go Generate (flyteadmin) / Go Generate	2m 21s
Check Go Generate (datacatalog) / Go Generate	1m 34s
Check Go Generate (flytecopilot) / Go Generate	1m 31s
Unit Tests (flytecopilot) / Run Unit Test	2m 35s
Unit Tests (flytectl) / Run Unit Test	3m 38s
Unit Tests (flyteplugins) / Run Unit Test	3m 56s
Unit Tests (flytepropeller) / Run Unit Test	4m 13s
Unit Tests (flytestdlib) / Run Unit Test	3m 41s
Check Go Generate (flytectl) / Go Generate	2m 3s
Check Go Generate (flytepropeller) / Go Generate	2m 20s
Integration Test (flyteadmin) / Integration tests	6m 10s
	2h 0m 24s

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