Support for posting a bug via a config file like mechanism

[sridhar]

Bugzilla supports custom fields. It is not expected that the cli will support all the options, however, it would be great if a file template can be used to just create a bug.

E.g. of a file would be:

Product     : Platform
Component   : SuperCool
Title       : FeartureX crashes on enabling Y
Version     : unspecified

Operating System: Linux
Priority    : Normal
Severity    : normal
Assigned to : example@example.com
CC          : ['example@example.com']

Defect found in: unit-testing