shell: disallow abbrev in argparse

The way cliff works, it parses the command line in several passes, which
can make certain option interpreted as other options.

Change-Id: I1ef4b88cab7637bf0e6627235e12144c80cfe12d

gnocchiclient/shell.py

@@ -96,8 +96,10 @@ class GnocchiShell(app.App):
         :param version: version number for the application
         :paramtype version: str
         """
-        parser = super(GnocchiShell, self).build_option_parser(description,
-                                                               version)
+        parser = super(GnocchiShell, self).build_option_parser(
+            description,
+            version,
+            argparse_kwargs={'allow_abbrev': False})
         # Global arguments, one day this should go to keystoneauth1
         parser.add_argument(
             '--os-region-name',

requirements.txt

@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 pbr<2.0,>=1.4
-cliff>=1.14.0 # Apache-2.0
+cliff>1.16.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
 oslo.utils>=2.0.0 # Apache-2.0
 keystoneauth1>=1.0.0