Updated openstack/openstack
Project: openstack/cinder  87e906c1684758bc5ad3b2ebfc7a30a14ff14f2e
null
LVM: remove redundant casts to float

The vg_free_space field is always assigned a float, so additional casts
are not necessary.

Change-Id: Ic2af78ba7dbd7388cc071fc2f0ea876a1558d0e9