Updated openstack/openstack
Project: openstack/nova  9f343b6ccf79b599ff08a91bfe74a6ad9ff7a15b

Merge unit tests of "create a flavor" API

In test_flavor_manage, there are success/bad_request tests of
"create a flavor". Most parts of them are duplicated.
This patch merges them for the readability and clarifying their
purposes.

Change-Id: Ic7fa319674594f4470b6eafd3e07e7c467b99477