Make ops-files and vars-files inputs optional

[reneighbor]

What is this change about?

Make ops-files and vars-files inputs optional

• They are not used if the pipeline user is using default cf-deployment setup
• This causes users to add dummy / unused resources and adds pipeline cruft

Please provide contextual information.

https://vmware.slack.com/archives/C01ERQAVD2L/p1631131092013600

Please check all that apply for this PR:

• introduces a new task
• changes an existing task
• changes the Dockerfile
• introduces a breaking change (other users will need to make manual changes when this is released)

Did you update the README as appropriate for this change?

• YES
• N/A

How should this change be described in release notes?

Something brief that conveys the change and is written with the component author audience in mind.

What is the level of urgency for publishing this change?

• Urgent - unblocks current or future work
• Slightly Less than Urgent

Tag your pair, your PM, and/or team!

@cloudfoundry/runtime

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ rroberts2222 (d11400c)

[davewalter]

Hi @rroberts2222,

Could you please sign the CLA? You will need to close and reopen the PR to get the check to rerun.

Thanks,
Dave

[davewalter]

Thanks for the contribution!