Added sample tests to floating-ip-pools API.

Partially implements blueprint nova-api-samples
Fixes bug 1070165

Change-Id: Ia7d99354ae815cdd8a41b012f568877751a3d8bd
Fix bad imports that cause nova-novncproxy to fail

Looks like it was introduced with
Iddba07ff13e10dc41a6930749044bb8c0572d279

Fixes LP# 1104907

Change-Id: Ie0c01af62a7fd20a6021b3c6fe89af88585e2fb2
clean up api_samples documentation

the documentation for API samples was very misleading,
and hard to point people at what to do to add new samples.
Bring this more in line with reality.

Change-Id: I52da343d317cc77e5df30815f3f3721c2634585b
Merge "Added sample tests to floating-ip-pools API."
Merge "clean up api_samples documentation"