nova-manage: remove unused import

Unused since commit 9ff3121b

Change-Id: I76bb49669d1cdfc3bf5b1c20087b4bd77420cd91
Don't actually connect to libvirtd in unit tests.

The libvirt tests shouldn't actually be connecting to libvirtd
while running unit tests. Many of the tests were calling either
getLibVersion or getCapabilites, which would start a connection.
Fake these out so the tests can run properly without libvirtd.

Fixes bug 1157992

Change-Id: Iff1a60fc3cc912fdaf641f1f289744bcc9cc9736
Bring back sexy colorized test results.

Also attempt to keep test results together and print out a nice
display of the ten slowest tests.

Change-Id: Ib54eb6dede8650ebafc3f069ee7b4a8c4c1a523c
Merge "Bring back sexy colorized test results."
Merge "nova-manage: remove unused import"
Merge "Don't actually connect to libvirtd in unit tests."