cli: add center.py

command to add center, specifying name and optionally a description
ogcli add center --name <name> [--comment <name>]

For example, to add a center with name "foocenter" and comment "foocenter description" type

$ ogcli add center --name foocenter --comment "foocenter description"

cli/cli.py

@@ -15,6 +15,7 @@ from cli.objects.poweroff import OgPoweroff
 from cli.objects.reboot import OgReboot
 from cli.objects.repo import OgRepo
 from cli.objects.server import OgServer
+from cli.objects.center import OgCenter
 import argparse
 import requests
 import sys
@@ -209,7 +210,7 @@ class OgCLI():
             OgServer.delete_server(self.rest, args[1:])
 
     def add(self, args):
-        choices = ['server', 'repo']
+        choices = ['server', 'repo', 'center']
         parser = argparse.ArgumentParser(prog='ogcli add')
         parser.add_argument('add_obj', choices=choices)
 
@@ -223,3 +224,5 @@ class OgCLI():
             OgServer.add_server(self.rest, args[1:])
         elif parsed_args.add_obj == 'repo':
             OgRepo.add_repo(self.rest, args[1:])
+        elif parsed_args.add_obj == 'center':
+            OgCenter.add_center(self.rest, args[1:])

cli/objects/center.py

@@ -0,0 +1,20 @@
+import argparse
+
+class OgCenter():
+    @staticmethod
+    def add_center(rest, args):
+        parser = argparse.ArgumentParser(prog='ogcli add center')
+        parser.add_argument('--name',
+                            nargs='?',
+                            required=True,
+                            help='Name of the center')
+        parser.add_argument('--comment',
+                            nargs='?',
+                            required=False,
+                            help='(Optional) Provide a more detailed description of the center')
+        parsed_args = parser.parse_args(args)
+        payload = {'name': parsed_args.name}
+        if parsed_args.comment:
+            payload['comment'] = parsed_args.comment
+        rest.post('/center/add', payload=payload)
+