Help text was added to the configuration options defined in the brocade neutron
plugin. This help text should assist users of the brocade plugin. The OSTYPE
configuration option was not used in the plugin and was labeled as such so a
user of the plugin would not worry about the meaning of it.
The example etc file /etc/neutron/plugins/brocade/brocade.ini has been updated
to share the same help values where applicable.
Fixes-Bug: #1157511
Change-Id: Ie068396e77902037a7a0b5334d4dfb0dcdd3575e
a97c34a125