Cleanup rspec tests of nova::api

Change-Id: I0b93f4e22671ca71408e0a1aa2b7d959bb57437d
Cleanup rspec tests of nova::client

Change-Id: I13652068ba2e99304a85cf3ac4ff0da5cd16b16b
Cleanup rspec tests of nova::compute::libvirt

Change-Id: Ie410ac8f2fc2d0ebd9e79a869f51e9b7bb315a6e
Cleanup rspec tests of nova::cert

Change-Id: Idc358a6a20ec5525f3c12a5356d405512f9b8590
Cleanup rspec tests of nova::compute

Change-Id: I0822ab9e746e3bc19a8e9d8851735657af772dd7
Cleanup rspec tests of nova::consoleauth

Change-Id: I14f5aa56c0d326b1b172266f6767682f1c052edc
Cleanup rspec tests of nova::conductor

Change-Id: I649318e2936d8de0b565fd59c1f758d367477c0e
Cleanup rspec tests of nova::scheduler

Change-Id: Ie072c21606dd509bf64d764f6efd3ebabe9f857a
Cleanup rspec tests of nova::objectstore

Change-Id: If97f057248d863077b5791af70342b75ec7d1b62