Use networks floatingips client to associate fips
Use networks floatingips client to associate fips

With the deprecation of the 'associate floating IP' server action in
2.44 [1], we need to use the networks client to associate floating
IPs.

[1] https://developer.openstack.org/api-ref/compute/?expanded=add-associate-floating-ip-addfloatingip-action-deprecated-detail,list-servers-detail,list-servers-detailed-detail,show-port-interface-details-detail,list-port-interfaces-detail

Change-Id: Ib3655bed87f019c32dcff7f8ff05634398a52962

Juniper/tempest,Juniper/tempest,openstack/tempest,masayukig/tempest,masayukig/tempest,cisco-openstack/tempest,cisco-openstack/tempest,openstack/tempest