Fix port_security_enabled key for port module

Changes to the port_security_enabled parameter are not applied due to
mismatching key names.
In the port module, the input parameter is called `port_security_enabled`,
while the OpenStackSDK is using a field called `is_port_security_enabled`.

When updating an existing port, the port module is comparing the dictionary
keys of the Ansible module parameters with those of the port object
returned by the OpenStackSDK.
Since these keys different, they will not match and changes to
port security are not applied.

Story: 2010687
Task: 47789
Change-Id: I838e9d6ebf1a281269add91724eac240abe35fd4

plugins/modules/port.py

@@ -138,10 +138,11 @@ options:
             of I(no_security_groups): C(true)."
         type: bool
         default: 'false'
-    port_security_enabled:
+    is_port_security_enabled:
         description:
           - Whether to enable or disable the port security on the network.
         type: bool
+        aliases: ['port_security_enabled']
     security_groups:
         description:
           - Security group(s) ID(s) or name(s) associated with the port.
@@ -479,7 +480,7 @@ class PortModule(OpenStackModule):
         name=dict(required=True),
         network=dict(),
         no_security_groups=dict(default=False, type='bool'),
-        port_security_enabled=dict(type='bool'),
+        is_port_security_enabled=dict(type='bool', aliases=['port_security_enabled']),
         security_groups=dict(type='list', elements='str'),
         state=dict(default='present', choices=['absent', 'present']),
     )
@@ -655,7 +656,7 @@ class PortModule(OpenStackModule):
                   'extra_dhcp_opts',
                   'is_admin_state_up',
                   'mac_address',
-                  'port_security_enabled',
+                  'is_port_security_enabled',
                   'fixed_ips',
                   'name']:
             if self.params[k] is not None: