VMware Prow/Test-Grid Updates
VMware Prow/Test-Grid Updates

This patch introduces several updates to the VMware jobs and test-grid
reports:

Pre-submits:
* pull-cloud-provider-vsphere-check - provides linting
* pull-cloud-provider-vsphere-build - builds the CCM and CSI binaries
* pull-cloud-provider-vsphere-unit-test - executes the unit tests
* pull-cloud-provider-vsphere-integration-test - executes the
  integration tests

Post-submits:
* post-cloud-provider-vsphere-deploy - builds, tests, and deploys the
  CCM and CSI images

Periodics for out-of-tree cloud provider:
* ci-cloud-provider-vsphere-conformance-latest
* ci-cloud-provider-vsphere-conformance-stable-1-13
* ci-cloud-provider-vsphere-conformance-stable-1-12
* ci-cloud-provider-vsphere-conformance-stable-1-11

Periodics for in-tree cloud provider:
* ci-vsphere-conformance-latest
* ci-vsphere-conformance-stable-1-13
* ci-vsphere-conformance-stable-1-12
* ci-vsphere-conformance-stable-1-11

GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid