enhance help for user-create/update role-mappings

Change-Id: Ia823e636769c65150629edd86364a21a196cdbad
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osmclient/scripts/osm.py b/osmclient/scripts/osm.py
index 62be7f7..80c5e41 100755
--- a/osmclient/scripts/osm.py
+++ b/osmclient/scripts/osm.py
@@ -3124,7 +3124,7 @@
               help='list of project ids that the user belongs to')
 @click.option('--project-role-mappings', 'project_role_mappings',
               default=None, multiple=True,
-              help='creating user project/role(s) mapping')
+              help="assign role(s) in a project. Can be used several times: 'project,role1[,role2,...]'")
 @click.option('--domain-name', 'domain_name',
               default=None,
               help='assign to a domain')
@@ -3168,16 +3168,16 @@
               help='change username')
 @click.option('--set-project', 'set_project',
               default=None, multiple=True,
-              help='create/replace the project,role(s) mapping for this project: \'project,role1,role2,...\'')
+              help="create/replace the roles for this project: 'project,role1[,role2,...]'")
 @click.option('--remove-project', 'remove_project',
               default=None, multiple=True,
-              help='removes project from user: \'project\'')
+              help="removes project from user: 'project'")
 @click.option('--add-project-role', 'add_project_role',
               default=None, multiple=True,
-              help='adds project,role(s) mapping: \'project,role1,role2,...\'')
+              help="assign role(s) in a project. Can be used several times: 'project,role1[,role2,...]'")
 @click.option('--remove-project-role', 'remove_project_role',
               default=None, multiple=True,
-              help='removes project,role(s) mapping: \'project,role1,role2,...\'')
+              help="remove role(s) in a project. Can be used several times: 'project,role1[,role2,...]'")
 @click.pass_context
 def user_update(ctx, username, password, set_username, set_project, remove_project,
                 add_project_role, remove_project_role):