[geo-rep] Improving help message for gluster-mountbroker

The arguments for gluster-mountbroker is missing help="< Some Text>"
parameter wherever add_argument() is used due to which gluster-mountbroker
help is missing  a brief description of what the argument does in the help
of {add,setup,remove} as shown below:

usage: gluster-mountbroker remove [-h] [--volume VOLUME] [--user USER]

optional arguments:
  -h, --help       show this help message and exit
  --volume VOLUME
  --user USER
usage: gluster-mountbroker add [-h] volume user

positional arguments:
  volume
  user

optional arguments:
  -h, --help  show this help message and exit
usage: gluster-mountbroker setup [-h] mount_root group

positional arguments:
  mount_root
  group

optional arguments:
  -h, --help  show this help message and exit

fixes: bz#1728683

Change-Id: I7eabcd2c103f01e40160ba35500b0a4e5c9f5e7a
Signed-off-by: kshithijiyer <kshithij.ki@gmail.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/geo-replication/src/peer_mountbroker.py.in b/geo-replication/src/peer_mountbroker.py.in
index 96a72643ac3..40b90ffc560 100644
--- a/geo-replication/src/peer_mountbroker.py.in
+++ b/geo-replication/src/peer_mountbroker.py.in
@@ -222,8 +222,10 @@ class CliSetup(Cmd):
     name = "setup"
 
     def args(self, parser):
-        parser.add_argument("mount_root")
-        parser.add_argument("group")
+        parser.add_argument("mount_root",
+                            help="Path to the mountbroker-root directory.")
+        parser.add_argument("group",
+                            help="Group to be used for setup.")
 
     def run(self, args):
         out = execute_in_peers("node-setup", [args.mount_root,
@@ -333,8 +335,10 @@ class CliAdd(Cmd):
     name = "add"
 
     def args(self, parser):
-        parser.add_argument("volume")
-        parser.add_argument("user")
+        parser.add_argument("volume",
+                            help="Volume to be added.")
+        parser.add_argument("user",
+                            help="User for which volume is to be added.")
 
     def run(self, args):
         out = execute_in_peers("node-add", [args.volume,
@@ -374,8 +378,9 @@ class CliRemove(Cmd):
     name = "remove"
 
     def args(self, parser):
-        parser.add_argument("--volume", default=".")
-        parser.add_argument("--user", default=".")
+        parser.add_argument("--volume", default=".", help="Volume to be removed.")
+        parser.add_argument("--user", default=".",
+                            help="User for which volume has to be removed.")
 
     def run(self, args):
         out = execute_in_peers("node-remove", [args.volume,