objects: add missing prog parameter in subcommands

The specific subcommand name is missing in some of the subcommands help
message. For example:

	$ ogcli list hardware
	usage: ogcli [-h] --client-ip CLIENT_IP
	ogcli: error: the following arguments are required: --client-ip

Fix this by adding the missing prog= parameter so argparse use this
instead of argv[0]. If no prog parameter is specified then argv[0] is
printed (i.e: "ogcli").

cli/objects/client.py

@@ -19,7 +19,7 @@ class OgClient():
 
     @staticmethod
     def list_client_hardware(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli list hardware')
         parser.add_argument('--client-ip',
                             nargs=1,
                             type=str,
@@ -33,7 +33,7 @@ class OgClient():
 
     @staticmethod
     def get_client_properties(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli list client')
         parser.add_argument('--client-ip',
                             nargs=1,
                             required=True,
@@ -46,7 +46,7 @@ class OgClient():
 
     @staticmethod
     def send_refresh(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli send refresh')
         parser.add_argument('--client-ip',
                             action='append',
                             default=[],

cli/objects/disks.py

@@ -15,7 +15,7 @@ class OgDisk():
 
     @staticmethod
     def list_disks(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli list disks')
         parser.add_argument('--client-ip',
                             nargs='?',
                             required=True,
@@ -44,7 +44,7 @@ class OgDisk():
         part_types = ['LINUX', 'EFI', 'WINDOWS', 'CACHE']
         fs_types = ['EXT4', 'FAT32', 'NTFS', 'CACHE']
 
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli setup disk')
         parser.add_argument('--type',
                             nargs='?',
                             required=True,

cli/objects/images.py

@@ -20,7 +20,7 @@ class OgImage():
 
     @staticmethod
     def restore_image(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli restore image')
         parser.add_argument('--disk',
                             nargs='?',
                             required=True,
@@ -101,7 +101,7 @@ class OgImage():
 
     @staticmethod
     def create_image(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli create image')
         parser.add_argument('--disk',
                             nargs='?',
                             required=True,
@@ -156,7 +156,7 @@ class OgImage():
 
     @staticmethod
     def update_image(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli update image')
         parser.add_argument('--disk',
                             nargs='?',
                             required=True,

cli/objects/poweroff.py

@@ -14,7 +14,7 @@ class OgPoweroff():
 
     @staticmethod
     def send_poweroff(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli send poweroff')
         group = parser.add_argument_group(
             'clients', 'Client selection options')
         group.add_argument('--center-id',

cli/objects/reboot.py

@@ -14,7 +14,7 @@ class OgReboot():
 
     @staticmethod
     def send_reboot(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli send reboot')
         group = parser.add_argument_group(
             'clients', 'Client selection options')
         group.add_argument('--center-id',

cli/objects/server.py

@@ -18,7 +18,7 @@ class OgServer():
 
     @staticmethod
     def add_server(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli add server')
         parser.add_argument('--address',
                             nargs='?',
                             required=True,
@@ -29,7 +29,7 @@ class OgServer():
 
     @staticmethod
     def delete_server(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli delete server')
         parser.add_argument('--id',
                             nargs='?',
                             required=True,
@@ -40,7 +40,7 @@ class OgServer():
 
     @staticmethod
     def set_server(rest, args):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli set server')
         parser.add_argument('--id',
                             nargs='?',
                             required=True,

cli/objects/wol.py

@@ -26,7 +26,7 @@ class OgWol():
                     return lookup
             return None
 
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(prog='ogcli send wol')
         parser.add_argument('--type',
                             nargs='?',
                             choices=['broadcast', 'unicast'],