After refactoring manila-ui plugin to adapt
to the tabbed quotas interface in horizon,
we stopped accesing the usages data structure
which (in horizon side) carries quotas information.
In this patch set we perform quotas control by
querying manilaclient directly.
Change-Id: I2896d54fde0d5e3975afbb7274faadf2a1a81d7c
Closes-Bug: #1783232
Co-Authored-By: Tom Barron <tpb@dyncloud.net>