Updated openstack/openstack
Project: openstack/cinder  fc02462e625cf5427fa2794c51b69be8cf638a89
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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 .swp exists,
so improving this with .*.sw?

Closes-Bug: #1255857

Change-Id: I22b6fa351dd565d4783f432c01785c706acd8397