Add test for file exists before copy in aeolus-configure.spec.in
Add test for file exists before copy in aeolus-configure.spec.in

We previously added an empty directory at config/locales/overrides which
caused the existing file copying to fail when no config/locales/overrides/*.yml
was present. This fix tests to see if a file is present before attempting to copy.

aeolusproject/conductor,aeolusproject/conductor,aeolusproject/conductor,aeolusproject/conductor