Add the "--enable-port-security" and "--disable-port-security" options
to the "network create" and "network set" commands. This supports setting
the default port security for ports created on a network.

Change-Id: I1deb505bd77cef2e4bc3c2dbbb0c450665136f47
Implements: blueprint neutron-client

This patch adds the missing "." to some docstring/text.

Trivial fix

Change-Id: Iffb470dcce7200ddc9e439c465adc652a8322708

Add the "geneve" choice to the "os network create" command's
"--provider-network-type" option.

Change-Id: I7573232ec3594ec4acbfae43a8456b8c3fcd1a83
Implements: blueprint neutron-client

osc network set and network create now support
--transparent-vlan|--no-transparent-vlan options
to add/remove vlan transparency from the network.

Change-Id: I845eb8f541cd32a4c4b28f929a63b205e7e31756
Closes-Bug: 1545537

Add descriptions to the network resource command documentation.

Change-Id: I547ffb48f8950311a5ee65d6b535846f2aca0efc

The following patch adds the provider network options
to OSC "network set".

Change-Id: I23b617077eda25d16164172a8e280082750eaf18
Partial-Bug: #1545537

Add _() to wrap help message in network commands.
And also some improvement for help message.

Change-Id: Ib3e498f5976ba98c44fd4eec2d1623263b3db53e
Partial-bug: 1570924

The following patch adds the options "--external" & "--internal"
and the suboptions to "external": "--default" & "--no-default",
to "osc network set" CLI to provide the user an option to set
a network as an external network or remove the setting.

Change-Id: I3a7f2cb249bc8101cbb01322d7732e913237d6cd
Partial-Bug: #1545537

There are lots of "this option can be repeated" comments
in the doc, which are not consistent to other similar
docs.

This patch changes them to the following format:

"repeat option to do something"

Change-Id: I54e01053091c428bf87bb36bb95f73a0b80ab6e7