supported OpenStack Quantum Router Operation. not include mock code.
added mock code for router operation.
fixed responce data from mock and removed vanilla options reject code.
[openstack|network] create_network provider extensions

Implements provider extensions when creating networks.

See:

http://docs.openstack.org/trunk/openstack-network/admin/content/provider_attributes.html

Complements #1581 (Added missing Network model attributes)
[openstack|network] Added missing router model/collection
[openstack|network] update_router request updates

- Filter out invalid options
- Add support for additional options:
  * name
  * admin_state_up
- external_gateway_info can be either a Hash or a
  Fog::Network::OpenStack::Network (see docs)
- Added documentation
[openstack|network] router model updates

- Added missing attributes
- Added documentation
[openstack|network] create_router request updates

- Filter out invalid options
[openstack|network] Added missing router related tests
@rubiojr wrote mock code for openstack routers.
@rubiojr fixed mock test failure.
@rubiojr fixed mock faulure for router(s)_tests.rb
[openstack|network] create_network provider extensions reworked

- Differenciate provider and vanilla options
- Fixed mocks
[openstack|network] remove extra trailing comma
Remove unecessary print
Added Content-Disposition attribute for Rackspace file
Merge pull request #1660 from chirag-jog/master

Remove unnecessary print statement
Merge pull request #1662 from snoopie/master

Allow passing Content-Disposition header when saving file into Rackspace cloud
Removed Zerigo::Models::DNS::Records#find method, moved functionality to all(options)
Removed Rackspace::Models::DNS::Zones#find, moved functionality to all(options)
fixed infinite loop in each method of AWS Distributions