Update integration testing to match new package name k8s

[foxish]

From #497 (comment)

@varunkatta @ssuchter The Jenkins environment needs to be updated since the commands had a wildcard on deploy.kubernetes.* which has been changed to deploy.k8s.*

cc/ @ifilonenko

[foxish]

@ifilonenko, only the integration tests need the update as far as I checked. Correct?

[ifilonenko]

Unit tests don't have wildcard because they run complete unit tests, so yes, I believe so

[ssuchter]

I think this is done. I modified two command lines in these builds:

PR-spark-k8s-integration-test
SCHEDULED-spark-k8s-integration-test

and one command line in this build:

test-spark

[foxish]

Verified that this is fixed. Thanks @ssuchter!