Replaced expensive get_server() and fixed issues in server module

openstacksdk's get_server() [1] calls add_server_interfaces() [2]
which queries OpenStack APIs several times to get all ports and
floating ips attached to a server.

Now we call openstacksdk's compute.find_server() [3] and compute.\
get_server() [4] which result in two API calls, in order to fill
server['addresses'] attribute which we later use to get floating ip
addresses attached to the server.

Do an extra call to compute.get_server() in order to return a pristine
server resource, because openstacksdk's create_server() might call
meta.add_server_interfaces() which alters server attributes such as
server['addresses'] [5].

Fail if options 'auto_ip', 'floating_ips' or 'floating_ip_pools'
are specified but 'wait' is not set to true, because openstacksdk
will add floating ip addresses only if we wait until the server
has been created [6]. This conditional fail will help users to not
shoot their foot.

Marked floating ip support unstable in this module due to various
unresolved issues in openstacksdk's add_ips_to_server() function
such as [9] and [10].

For Zuul CI job ansible-collections-openstack-functional-devstack-\
releases to pass, the minimum required openstacksdk release must be
0.101.0 because [7],[8] are available since that release only.

[1] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/cloud/_compute.py#L484
[2] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/cloud/meta.py#L439
[3] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/compute/v2/_proxy.py#L652
[4] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/compute/v2/_proxy.py#L666
[5] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/cloud/_compute.py#L942
[6] https://opendev.org/openstack/openstacksdk/src/commit/3f81d0001dd994cde990d38f6e2671ee0694d7d5/openstack/cloud/_compute.py#L945
[7] https://review.opendev.org/c/openstack/openstacksdk/+/851976
[8] https://github.com/openstack/openstacksdk/commit/0ded7ac398843b6b1ce46668eb3b45ce02628428
[9] https://storyboard.openstack.org/#!/story/2010352
[10] https://storyboard.openstack.org/#!/story/2010153

Change-Id: I6a5663433b1b9529f99d5eced22a28c692a1d288