Updated openstack/openstack
Project: openstack/horizon  b77197c6d4c45f9ffa090fff895c4474c661a26e
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Updates .gitignore

To ignore swap files from getting into repository
currently the implemented ignore is *.swp
however vim adds more swap files if these files exists,
so improving this with *.sw?

Change-Id: I91c799acfe186791061cd91414f606fd7cf08fb7
Closes-Bug: #1255876