Fix default nova node names in Grizzly

Folsom compute node names are unqualified in the database, Grizzly
qualifies them with the value of dhcp_domain.  In the migration
we'll unset that for now.

Bug 1160072

Change-Id: I176cace9c5319265944c276d5c8eae704e99f671
add devstack.localrc.example

Change-Id: Ifc923cac6942de83ebef005cb343c829e6627f0f
Add a .gitignore file.

This commit adds a git ignore file which currently has localrc and
swap files.

Change-Id: Ib3f366a94554e565ab26afbba225560c7a512b47
Merge "add devstack.localrc.example"
Merge "Fix default nova node names in Grizzly"