Enhance ci env #172

Job	Run time
kserve-image-build	6m 26s
poetry-check	26s
predictor-runtime-build	10m 32s
graph-tests-images-build	4m 29s
explainer-runtime-build	3m 27s
test-with-helm	8m 37s
test-predictor	26m 58s
test-path-based-routing	19m 27s
test-kourier	15m 13s
test-graph	17m 37s
test-qpext	9m 57s
test-raw	15m 5s
test-transformer-explainer-mms	20m 5s
	2h 38m 19s

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