SR-IOV: supports qos minimum bandwidth
SR-IOV: supports qos minimum bandwidth

In addition to rate limitting[1], minimum bandwidth rule was added
by [2] and [3]

[1] I364fc8158e502d4dcc3510d6157f12969961a11d
[2] Iefe5e698e99d186202d6ef170f84e93bfbba46dd
[3] I6b619a96a2bfde164646c71409b671352bc6ce7d

Lets add it to the sriov agent docs.

Change-Id: I77daf9db6210ea213c94f94f4aa979680b32d501

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals