Add test list_servers_filtered_by_name_regex

The nova servers API supports full regex filtering on names. Add a test
for basic regex support.

Change-Id: Iddd5908d7daa5d5b20cb29dd0f403fcdd3ecefcf
javelin: fix user destruction

Use the right Python method to destroy an user:
- get the tenant_id
- get the user_id (with tenant_id)
- delete the user using user_id

Change-Id: I2121fedf563cc4d41f8ad8dfcaf55d767d87d69f
Merge "javelin: fix user destruction"
Remove "nova-manage flavor list" CLI test

The "nova-manage flavor" sub-commands were deprecated in Juno and Nova
change I1798c8a0697009b3dcebeb818580c8323880e395 removes them.

This removes the test_flavor_list test and changes the test_debug_flag
and test_verbose_flag tests to use 'nova-manage service list' instead of
'nova-manage flavor list'.

Change-Id: I4e2399f2fbab2c20299dd62c104b9220c1d36fb2
Merge "Add test list_servers_filtered_by_name_regex"
Merge "Remove "nova-manage flavor list" CLI test"
Merge branch 'master' of https://github.com/openstack/tempest