Added nopackages option and Fix #24997 (#28831)

* Added nopackages option and Fix #24997
Adding a new option - nopackages.
This enables the option to add the --nopackages flag while registering a new node to RHN Satellite. We are not uploading the rpm data on our nodes and since we started utilizing ansible for nodes registration, I figures it would be useful for others as well.
Also-
Fixes #24997 (verified in my lab)

* Fixed documentation

* Documentation changes:
- typo fix in "default"
- Added "version_added" and set to 2.4

* Documentation changes:
- Removed trailing whitespaces in nopackages['version_added']

* This change is unrelated for this feature pull request and shouldn't be here (and also seems wrong, see #25079).

* Changed "version_added" to 2.5 in the module docs

lib/ansible/modules/packaging/os/rhn_register.py

@@ -81,6 +81,12 @@ options:
             - If true, extended update support will be requested.
         required: false
         default: false
+    nopackages:
+        description:
+            - If true, the registered node will not upload its installed packages information to Satellite server
+        required: false
+        default: false
+        version_added: "2.5"
 '''
 
 EXAMPLES = '''
@@ -250,7 +256,7 @@ class Rhn(redhat.RegistrationBase):
         self.update_plugin_conf('rhnplugin', True)
         self.update_plugin_conf('subscription-manager', False)
 
-    def register(self, enable_eus=False, activationkey=None, profilename=None, sslcacert=None, systemorgid=None):
+    def register(self, enable_eus=False, activationkey=None, profilename=None, sslcacert=None, systemorgid=None, nopackages=False):
         '''
             Register system to RHN.  If enable_eus=True, extended update
             support will be requested.
@@ -262,6 +268,8 @@ class Rhn(redhat.RegistrationBase):
             register_cmd.extend(['--serverUrl', self.server_url])
         if enable_eus:
             register_cmd.append('--use-eus-channel')
+        if nopackages:
+            register_cmd.append('--nopackages')
         if activationkey is not None:
             register_cmd.extend(['--activationkey', activationkey])
         if profilename is not None:
@@ -346,6 +354,7 @@ def main():
             sslcacert=dict(default=None, required=False, type='path'),
             systemorgid=dict(default=None, required=False),
             enable_eus=dict(default=False, type='bool'),
+            nopackages=dict(default=False, type='bool'),
             channels=dict(default=[], type='list'),
         )
     )
@@ -364,6 +373,7 @@ def main():
     systemorgid = module.params['systemorgid']
     channels = module.params['channels']
     enable_eus = module.params['enable_eus']
+    nopackages = module.params['nopackages']
 
     rhn = Rhn(module=module, username=username, password=password)
 
@@ -392,7 +402,7 @@ def main():
 
         try:
             rhn.enable()
-            rhn.register(enable_eus, activationkey, profilename, sslcacert, systemorgid)
+            rhn.register(enable_eus, activationkey, profilename, sslcacert, systemorgid, nopackages)
             rhn.subscribe(channels)
         except Exception as exc:
             module.fail_json(msg="Failed to register with '%s': %s" % (rhn.hostname, exc))