csi: Add e2e tests for plugin that use VMC

[codenrhoden]

The goal here is have a set of tests that can run on VMC infrastructure that exercises E2E functionality of the CSI plugin.

To this end, the following tasks need to be completed:

• Add support to sk8 for deploying the CSI plugin
• Determine how to build an e2e.test binary from tests housed in this repo that use the existing K8s testing framework
• Determine which E2E storage tests from the K8s repo can be run on VMC infrastructure. This will be a subset of what is there now, as most "disruptive" tests (e.g. those that reboot vCenter infrastructure components) cannot be run on VMC.
• Determine what/where/how to run "destructive" tests, or tests that require additional infrastructure that is hard to achieve on VMC (e.g. multi-vcenter testing, zones, etc.).
• Once prow jobs can launch tests onto VMC, run the E2E tests there and report status back to testgrid

These tests would be the "real" tests, that run on VMC against an actual vCenter instance.

[dougm]

As discussed yesterday, we have the option of following cluster-api's script based method or using the e2e framework. Andrew offered to give an overview of e2e after the holiday. Either way, we'll need a similar prow job to inject VMC config into the environment.

References:

• cluster-api prow config

• cluster-api e2e script

• k8s e2e framework docs

• k8s e2e sources

[frapposelli]

/assign @codenrhoden

[codenrhoden]

Migrated issue over to new CSI repo