provider/openstack: Don't allow floating IP and port (#12099)
provider/openstack: Don't allow floating IP and port (#12099)

This commit adds a check to prevent a user from specifying both
a floating IP and a port on a specific network. While this
configuration is currently allowed, the Port will be chosen and
applying the configuration again will show a state mismatch. This
attempts to prevent such a misconfiguration.
haxorof/terraform-provider-openstack,haxorof/terraform-provider-openstack,haxorof/terraform-provider-openstack