VMware: Remove tests for None in fake._db_content['files']

This looks like a legacy. _db_content['files'] is always initialised,
and checking it for None distracts from what is actually being tested.

This was also the only use of NoFilesFound, so we remove it entirely.

Change-Id: Ided6c71b68a654476512016ddf886e895d75e571
Remove duplicate entry from .gitignore file

This commit removes the duplicate entry in the gitignore file for the
sample config file.

Closes-Bug: #1375432

Change-Id: Ied0fb5b38a616bbde871dfc690ccccfd46c94bde
Merge "Remove duplicate entry from .gitignore file"
Merge "VMware: Remove tests for None in fake._db_content['files']"