Dropped default module options

Removed default=None, type='str' and required=False from all module's
argument_specs with

sed -i \
    -e 's/default=None, //g' \
    -e 's/default=None,//g' \
    -e 's/default=None//g' \
    -e "s/type='str', //g" \
    -e "s/type='str',//g" \
    -e "s/type='str'//g" \
    -e 's/required=False, //g' \
    -e 's/required=False,//g' \
    -e 's/required=False//g' \
    plugins/modules/*.py plugins/module_utils/*.py

and manually cleaned the results because those options values are the
default in Ansible.

Ref.: https://docs.ansible.com/ansible/latest/dev_guide/developing_program_flow_modules.html#argument-spec

Change-Id: Icbc3bb84269d3b8205fac259300902ebdaf6a3ae

plugins/modules/security_group_rule.py

@@ -306,11 +306,11 @@ class SecurityGroupRuleModule(OpenStackModule):
 
     argument_spec = dict(
         security_group=dict(required=True),
-        protocol=dict(type='str'),
-        port_range_min=dict(required=False, type='int'),
-        port_range_max=dict(required=False, type='int'),
-        remote_ip_prefix=dict(required=False),
-        remote_group=dict(required=False),
+        protocol=dict(),
+        port_range_min=dict(type='int'),
+        port_range_max=dict(type='int'),
+        remote_ip_prefix=dict(),
+        remote_group=dict(),
         ether_type=dict(default='IPv4',
                         choices=['IPv4', 'IPv6'],
                         aliases=['ethertype']),
@@ -318,8 +318,8 @@ class SecurityGroupRuleModule(OpenStackModule):
                        choices=['egress', 'ingress']),
         state=dict(default='present',
                    choices=['absent', 'present']),
-        description=dict(required=False, default=None),
-        project=dict(default=None),
+        description=dict(),
+        project=dict(),
     )
 
     module_kwargs = dict(