redhat_subscription: drop unneeded args to Rhsm.register() (#5583) (#5626)

Stop passing all the "rhsm_", and "server_" module arguments to
"Rhsm.register()", and thus as arguments for
"subscription-manager register":
- right before calling "Rhsm.register()", "Rhsm.configure()" is called
  to configure subscription-manager with all the "rhsm_", and "server_"
  arguments; hence, they are already configured
- the passed argument to "--serverurl" is partially wrong:
  "Rhsm.register()" passes only the hostname, whereas the other bits
  (port and prefix) are supported too; this "works" because port and
  prefix were already configured previously, and the lax parsing that
  subscription-manager does allows for missing bits
- the parsing done by subscription-manager for "--baseurl" strips out
  the URL scheme and always uses https: this means that specifying
  "rhsm_baseurl: http://server" as module parameter will be taken as
  "https://server" by subscription-manager; since "rhsm_baseurl" is
  already configured by "Rhsm.configure()", this issue is gone

(cherry picked from commit 101c957631)

Co-authored-by: Pino Toscano <ptoscano@redhat.com>

plugins/modules/redhat_subscription.py

@@ -394,8 +394,7 @@ class Rhsm(RegistrationBase):
 
     def register(self, username, password, auto_attach, activationkey, org_id,
                  consumer_type, consumer_name, consumer_id, force_register, environment,
-                 rhsm_baseurl, server_insecure, server_hostname, server_proxy_hostname,
-                 server_proxy_port, server_proxy_user, server_proxy_password, release):
+                 release):
         '''
             Register the current system to the provided RHSM or Red Hat Satellite
             or Katello server
@@ -409,27 +408,9 @@ class Rhsm(RegistrationBase):
         if force_register:
             args.extend(['--force'])
 
-        if rhsm_baseurl:
-            args.extend(['--baseurl', rhsm_baseurl])
-
-        if server_insecure:
-            args.extend(['--insecure'])
-
-        if server_hostname:
-            args.extend(['--serverurl', server_hostname])
-
         if org_id:
             args.extend(['--org', org_id])
 
-        if server_proxy_hostname and server_proxy_port:
-            args.extend(['--proxy', server_proxy_hostname + ':' + server_proxy_port])
-
-        if server_proxy_user:
-            args.extend(['--proxyuser', server_proxy_user])
-
-        if server_proxy_password:
-            args.extend(['--proxypassword', server_proxy_password])
-
         if activationkey:
             args.extend(['--activationkey', activationkey])
         else:
@@ -924,8 +905,7 @@ def main():
                 rhsm.configure(**module.params)
                 rhsm.register(username, password, auto_attach, activationkey, org_id,
                               consumer_type, consumer_name, consumer_id, force_register,
-                              environment, rhsm_baseurl, server_insecure, server_hostname,
-                              server_proxy_hostname, server_proxy_port, server_proxy_user, server_proxy_password, release)
+                              environment, release)
                 if syspurpose and 'sync' in syspurpose and syspurpose['sync'] is True:
                     rhsm.sync_syspurpose()
                 if pool_ids: