support listing network extensions

[bodenr]

as you know, almost all the openstack apis permit a caller to list the extensions for a given service. we already have that support for example in the identity driver of jumpgate.

however we appear to be missing it for the network driver.

there are a number of client side tools that will query the extensions and fail if a 501 response is returned which is the case for network.

this issue is to add the api support to network to return a list of supported extensions. even if that list is very short or even empty. this would provide greater support for client side tools.

api doc here: http://docs.openstack.org/api/openstack-network/2.0/content/retrieve_extensions.html

[wpf710]

I also run into such issue when I trying to make Openstack Horizon work with Jumpgate, and I have to modify the code manually to add the network/v2.0/extensions support just with the empty list, I may submit a pull request as the stub code since I don't know what SoftLayer will return

[clstokes]

This issue was to milestones in 2014, but the issue itself is still open. Is this still an open bug or has it been resolved?

[jimlindeman]

At this point, its not clear if there will be any more active development on Jumpgate, so ignore any milestone settings for this project. IBM/Softlayer's management needs to reassess if this is a github project they want to keep actively maintaining.