Bug 1441945

+++ This bug was initially created as a clone of Bug #1441942 +++

Description of problem:
=======================
On a gluster cluster with eventing enabled, the correct command to register a webhook would be:
    gluster-eventsapi webhook-test http://<ip>:<port_number><path_specified_in_webhook>

Say, we miss giving 'http', or 'tcp' or any such protocol in the path, then an exception is thrown by one of the internal scripts (/usr/libexec/glusterfs/peer_eventsapi.py):
    requests.exceptions.InvalidSchema: No connection adapters were found for '10.70.35.21:9000/listen'

This error message is expected to be caught and displayed by the gluster-eventsapi command, but instead it prints out:
    gluster.cliutils.cliutils.GlusterCmdException: (1, '', 'Unable to end. Error : Success\n', 'gluster system:: execute eventsapi.py node-webhook-test 10.70.35.21:9000/listen .

The above message is misleading and does not give an idea as to what is wrong. The correct error message if displayed would guide the user to take the appropriate corrective action.

Version-Release number of selected component (if applicable):
============================================================
3.8.4-22


How reproducible:
=================
2:2


Additional info:
================



[root@dhcp47-165 ~]# gluster-eventsapi webhook-test 10.70.35.21:9000/listen
Traceback (most recent call last):
  File "/usr/sbin/gluster-eventsapi", line 602, in <module>
    runcli()
  File "/usr/lib/python2.7/site-packages/gluster/cliutils/cliutils.py", line 224, in runcli
    cls.run(args)
  File "/usr/sbin/gluster-eventsapi", line 411, in run
    out = execute_in_peers("node-webhook-test", [url, bearer_token])
  File "/usr/lib/python2.7/site-packages/gluster/cliutils/cliutils.py", line 126, in execute_in_peers
    raise GlusterCmdException((rc, out, err, " ".join(cmd)))
gluster.cliutils.cliutils.GlusterCmdException: (1, '', 'Unable to end. Error : Success\n', 'gluster system:: execute eventsapi.py node-webhook-test 10.70.35.21:9000/listen .')
[root@dhcp47-165 ~]# python /usr/libexec/glusterfs/peer_eventsapi.py node-webhook-test 10.70.35.21:9000/listen
usage: peer_eventsapi.py node-webhook-test [-h] [--json] url bearer_token
peer_eventsapi.py node-webhook-test: error: too few arguments
[root@dhcp47-165 ~]# python /usr/libexec/glusterfs/peer_eventsapi.py node-webhook-test 10.70.35.21:9000/listen .
Traceback (most recent call last):
  File "/usr/libexec/glusterfs/peer_eventsapi.py", line 602, in <module>
    runcli()
  File "/usr/lib/python2.7/site-packages/gluster/cliutils/cliutils.py", line 224, in runcli
    cls.run(args)
  File "/usr/libexec/glusterfs/peer_eventsapi.py", line 386, in run
    resp = requests.post(args.url, headers=http_headers)
  File "/usr/lib/python2.7/site-packages/requests/api.py", line 109, in post
    return request('post', url, data=data, json=json, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 567, in send
    adapter = self.get_adapter(url=request.url)
  File "/usr/lib/python2.7/site-packages/requests/sessions.py", line 641, in get_adapter
    raise InvalidSchema("No connection adapters were found for '%s'" % url)
requests.exceptions.InvalidSchema: No connection adapters were found for '10.70.35.21:9000/listen'
[root@dhcp47-165 ~]#
[root@dhcp47-165 ~]# python /usr/libexec/glusterfs/peer_eventsapi.py node-webhook-test http://10.70.35.21:9000/listen .
{"output": "", "ok": true, "nodeid": "834d66eb-fb65-4ea3-949a-e7cb4c198f2b"}
[root@dhcp47-165 ~]# ^C
[root@dhcp47-165 ~]# 
[root@dhcp47-165 ~]# python /usr/libexec/glusterfs/peer_eventsapi.py node-webhook-test http://10.70.35.21:9000/listen .
{"output": "", "ok": true, "nodeid": "834d66eb-fb65-4ea3-949a-e7cb4c198f2b"}
[root@dhcp47-165 ~]# gluster-eventsapi webhook-test http://10.70.35.21:9000/listen+-----------------------------------+-------------+----------------+
|                NODE               | NODE STATUS | WEBHOOK STATUS |
+-----------------------------------+-------------+----------------+
| dhcp47-164.lab.eng.blr.redhat.com |          UP |             OK |
| dhcp47-162.lab.eng.blr.redhat.com |          UP |             OK |
| dhcp47-157.lab.eng.blr.redhat.com |          UP |             OK |
|             localhost             |          UP |             OK |
+-----------------------------------+-------------+----------------+
[root@dhcp47-165 ~]#

[root@dhcp47-165 ~]# 
[root@dhcp47-165 ~]# gluster peer status
Number of Peers: 3

Hostname: dhcp47-164.lab.eng.blr.redhat.com
Uuid: afa697a0-2cc6-4705-892e-f5ec56a9f9de
State: Peer in Cluster (Connected)

Hostname: dhcp47-162.lab.eng.blr.redhat.com
Uuid: 95491d39-d83a-4053-b1d5-682ca7290bd2
State: Peer in Cluster (Connected)

Hostname: dhcp47-157.lab.eng.blr.redhat.com
Uuid: d0955c85-94d0-41ba-aea8-1ffde3575ea5
State: Peer in Cluster (Connected)
[root@dhcp47-165 ~]# gluster v list
disp
dist
ozone