Common label changes with K8s upgrade to 1.12.3

[johnugeorge]

This PR tracks

1. Update k8s libs to 1.12.3(Update k8s libraries to 1.12.3 training-operator#1054)
2. Updates labels to common type (Renaming labels to common types training-operator#1064)

[coveralls]

Coverage remained the same at 85.281% when pulling 31a52dd on johnugeorge:k8supgrade into 9a6ae63 on kubeflow:master.

[johnugeorge]

/retest

[gaocegege]

LGTM 👍
/lgtm

[gaocegege]

/test kubeflow-pytorch-operator-presubmit

[johnugeorge]

/retest

[johnugeorge]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [johnugeorge]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment