Update CONTRIBUTING.md

[juliantap]

Updated the CCLA process per Tim. We also need to remove the CCLA PDF.

Change description

Need to update the CCLA process per Tim.

Project tracking

n/a

Do any added TODOs have an issue in the backlog?

no

Did you add unit tests? Why not?

n/a

Does this code need functional testing?

no

Is a code review walkthrough needed? why or why not?

no

Should additional test coverage be executed in addition to pre-merge?

no

Does this code need a note in the changelog?

Maybe a note that CCLA process was updated.

Does this code require documentation changes?

Only if we decide to note the CCLA chance in changlog.md.

Additional Information

We also need to remove https://github.com/NetApp/trident/blob/master/CONTRIBUTING_CCLA.pdf from the repo.

[juliantap]

@gnarl I added the clarification for Name & Website.