Validate EFS functionality as part of E2E test(s)

[RothAndrew]

Closes #228

To-Do:

• [x] Create a PVC and job
• [x] Update the golang test code to validate that the job completed successfully -- https://stackoverflow.com/questions/44686568/tell-when-job-is-complete

[RothAndrew]

/test all :robot: View pipeline run

[RothAndrew]

/test all (last one was the "insufficient capacity" error 😭 ) :robot: View pipeline run

[RothAndrew]

/test all (insufficient capacity again) :robot: View pipeline run

[RothAndrew]

/test all :robot: View pipeline run

[RothAndrew]

Ready for review and merge