Add new pipelins to on-demand E2E tests. #14785

Job	Run time
Check uncommitted changes in api docs action	1m 11s
Check generated files	13s
Run helm linting	5s
Run helm unit tests	8s
Run linting	3m 0s
Lint markdown files	25s
Prepare properties	4s
Code security scanning alerts	28s
Run unit tests	4m 31s
Build images (amd64)	3m 3s
Build images (arm64)	3s
Build images (ppc64le)	4s
Build images (s390x)	3s
Push images (amd64)	35s
Push images (arm64)	5s
Push images (ppc64le)	4s
Push images (s390x)	4s
Create manifest	20s
	14m 26s

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