Incorrent name for amphora provider

[Michal Arbet]

Hi,

while i'm tempesting kolla deployed stack I found that we are setting bad name for amphora provider.
These test is failing because of above ...

d11e4288-80d8-4dbd-b7f8-9f08451da4d7
Traceback (most recent call last):
  File "/opt/octavia-tempest-plugin/octavia_tempest_plugin/tests/api/v2/test_provider.py", line 70, in test_provider_list
    self.assertEqual(enabled_providers[provider[const.NAME]],
  File "/home/rally/.rally/verification/verifier-0b471bcf-87a9-4ffe-b933-3d28f5572bcf/.venv/lib/python3.9/site-packages/testtools/testcase.py", line 394, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/home/rally/.rally/verification/verifier-0b471bcf-87a9-4ffe-b933-3d28f5572bcf/.venv/lib/python3.9/site-packages/testtools/testcase.py", line 481, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: 'The Octavia Amphora driver.' != 'Amphora provider'

Also official documentation is documenting name for amphora driver as above 'The Octavia Amphora driver.'

https://docs.openstack.org/octavia/latest/configuration/configref.html#api-settings

After amend kolla-ansible project to render proper name for amphora driver, test is passing