trivial: add spaces after punctuation in config help text

This was rendering without proper spacing in between periods and new
sentences. This commit updates the spacing so the sample
undercloud.conf render with spacing between sentences.

Change-Id: I9b20cf1332eb6e832f637db5ed465b7261105c08

tripleoclient/config/standalone.py

@@ -130,16 +130,16 @@ class StandaloneConfig(BaseConfig):
             cfg.StrOpt('net_config_override',
                        default='',
                        help=_(
-                           'Path to network config override template.'
+                           'Path to network config override template. '
                            'Relative paths get computed inside of $HOME. '
-                           'Must be in the json format.'
+                           'Must be in the json format. '
                            'Its content overrides anything in t-h-t '
                            '<role>NetConfigOverride. The processed '
                            'template is then passed in Heat via the '
                            'generated parameters file created in '
                            'output_dir and used to configure the networking '
                            'via run-os-net-config. If you wish to disable '
-                           'you can set this location to an empty file.'
+                           'you can set this location to an empty file. '
                            'Templated for instack j2 tags '
                            'may be used, '
                            'for example:\n%s ') % NETCONFIG_TAGS_EXAMPLE