Add secret producer/receiver and docker credential helper #1047

Job	Run time
lint	10s
Detect changes (.github/workflows/test-pr.yaml, startupscript/, tests/common/, features/src/w...	7s
Smoke test 'jupyter-template'	5m 16s
Smoke test 'vscode'	4m 34s
Smoke test 'test-app-secrets'	1m 39s
Smoke test 'workbench-jupyter-parabricks'	5m 19s
Smoke test 'nemo_jupyter'	4m 36s
Smoke test 'jupyter-aou'	5m 17s
Smoke test 'r-analysis'	5m 17s
Smoke test 'nemo_jupyter_aou'	4m 32s
Smoke test 'vscode-docker'	4m 34s
Smoke test 'workbench-jupyter-parabricks-aou'	5m 19s
Smoke test 'r-analysis-aou'	4m 33s
Smoke test 'custom-workbench-jupyter-template'	5m 17s
Smoke test 'ubuntu-example'	3m 14s
Smoke test 'example'	3m 39s
	1h 3m 23s

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