The 'pip list' command prints the "safe name" which converts _'s to
-'s amongst other things; e.g. glance_store becomes
"glance-store 0.21.1.dev22 /opt/stack/glance_store"
Because people may use these more familiar "file system" names in
LIBS_FROM_GIT automatically convert names when checking if libraries
are installed.
Change-Id: I30524f80a341f38dfa794a8f629d859e85a4a448