Precise tempest_conf.yaml to verify Airship

Precise tempest_conf.yaml to verify Airship

It sets all max microversions according to Ocata [1][2][3] and takes
ceph into account (OpenStack and Functest gates leverage on iSCSI [4]).

[1] https://docs.openstack.org/cinder/latest/contributor/api_microversion_history.html
[2] https://docs.openstack.org/nova/latest/reference/api-microversion-history.html
[3] https://docs.openstack.org/placement/latest/placement-api-microversion-history.html
[4] https://git.opnfv.org/functest/tree/functest/opnfv_tests/openstack/tempest/custom_tests/tempest_conf.yaml?h=stable%2Fhunter#n24

Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
Change-Id: Ic5a8a501d83fbefadcad24d58bbc5c1e3ffcd6ce