Adds os-multi-create extension docs in separate section.

Fix bug 1039769

Patchset adds the WADL file I meant to git add.

Change-Id: Ib909cda827be885a65d1d78304dbc359906ad93c
Added support for Floating IP API

Modified: src/wadls/compute-api/src/ext/os-floating-ips.wadl
Added support on how to add floating ip to instance.
Sample files added:
   src/wadls/compute-api/src/api_samples/os-floating-ips/floating-ips-add-req.json
   src/wadls/compute-api/src/api_samples/os-floating-ips/floating-ips-add-req.xml
Fixes: bug 1060874

Change-Id: Ib2ae8ae6a685a66368ea61d7d3023d939825e724
Merge "Added support for Floating IP API"
Merge "Adds os-multi-create extension docs in separate section."