rhn_channel: fix py3 compatibility (use six)

and remove unused import

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

@@ -64,9 +64,8 @@ EXAMPLES = '''
     password: guessme
 '''
 
-import xmlrpclib
-from operator import itemgetter
-import re
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.six.moves import xmlrpc_client
 
 
 # ------------------------------------------------------- #
@@ -137,8 +136,8 @@ def main():
     user = module.params['user']
     password = module.params['password']
 
-    #initialize connection
-    client = xmlrpclib.Server(saturl, verbose=0)
+    # initialize connection
+    client = xmlrpc_client(saturl)
     session = client.auth.login(user, password)
 
     # get systemid
@@ -165,8 +164,5 @@ def main():
     client.auth.logout(session)
 
 
-# import module snippets
-from ansible.module_utils.basic import *
-
 if __name__ == '__main__':
     main()

test/sanity/import/skip.txt

@@ -97,7 +97,6 @@ lib/ansible/modules/network/lenovo/cnos_vlag.py
 lib/ansible/modules/network/lenovo/cnos_vlan.py
 lib/ansible/modules/network/nxos/nxos_file_copy.py
 lib/ansible/modules/packaging/language/maven_artifact.py
-lib/ansible/modules/packaging/os/rhn_channel.py
 lib/ansible/modules/storage/infinidat/infini_export.py
 lib/ansible/modules/storage/infinidat/infini_export_client.py
 lib/ansible/modules/storage/infinidat/infini_fs.py