Updated openstack/openstack
Project: openstack/tempest  8684758ca26f4c5567dba020f9894a052781834a

Fix rebuild server tests for wrong input

Nova rebuild server API takes 'metadata' as one of the input in
request body. But test_rebuild_non_existent_server pass
wrong input 'meta' in rebuild server call.

This patch removes optional arg of rebuild call from this test.

This tests does not fail because Nova V2 does not have strong input validation.
It is failed in Nova V2.1 experimental job on-
Ib13b02cefb9617e8af3b62b81d2f7eb7cd88eab1

Change-Id: Id276b94ae757801babc5e026ee5e38179d9e09e8