Cherry pick commits

[johnugeorge]

Cherry pick commits from master to release 1.6 branch

/hold

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge

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• OWNERS [johnugeorge]

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[tenzen-y]

/lgtm

[coveralls]

Pull Request Test Coverage Report for Build 4166191666

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 50 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.4%) to 39.356%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/apis/kubeflow.org/v1/mxnet_validation.go	2	95.0%
pkg/controller.v1/paddlepaddle/paddlepaddle_controller.go	3	53.35%
pkg/apis/kubeflow.org/v1/pytorch_validation.go	4	90.91%
pkg/apis/kubeflow.org/v1/xgboost_validation.go	4	91.84%
pkg/apis/kubeflow.org/v1/tensorflow_validation.go	12	75.0%
pkg/controller.v1/pytorch/pytorchjob_controller.go	25	58.19%

Totals
Change from base Build 4015610097:	0.4%
Covered Lines:	2725
Relevant Lines:	6924

---

💛 - Coveralls

[johnugeorge]

/hold cancel