Add list images

ogServer exposes a list of known partition images at /images, use it to
implement 'list images' command.

cli/cli.py

@@ -10,6 +10,7 @@ from cli.objects.client import OgClient
 from cli.objects.scopes import OgScope
 from cli.objects.modes import OgModes
 from cli.objects.wol import OgWol
+from cli.objects.images import OgImage
 import argparse
 import requests
 import sys
@@ -50,7 +51,7 @@ class OgCLI():
 
 	def list(self, args):
 		choices = ['clients', 'scopes', 'modes', 'hardware',
-			   'client']
+			   'client', 'images']
 		parser = argparse.ArgumentParser(prog='ogcli list')
 		parser.add_argument('item', choices=choices)
 		parsed_args = parser.parse_args([args[0]])
@@ -65,6 +66,8 @@ class OgCLI():
 			OgModes.list_available_modes(self.rest)
 		elif parsed_args.item == 'scopes':
 			OgScope.list_scopes(self.rest)
+		elif parsed_args.item == 'images':
+			OgImage.list_images(self.rest)
 
 	def set(self, args):
 		choices = ['modes']

cli/objects/images.py

@@ -0,0 +1,14 @@
+#
+# Copyright (C) 2021 Soleta Networks <info@soleta.eu>
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the
+# Free Software Foundation, version 3.
+#
+
+class OgImage():
+
+	@staticmethod
+	def list_images(rest):
+		r = rest.get('/images')
+		print(r.text)