This commit updates the proliantutils version required in Ironic
to 2.1.11 for Newton release.
This version of proliantutils fixes the bug caused by python
request library version 2.11.0. It also includes defect fixes
for Proliant Gen7 support and iLO based RAID configuration.
Change-Id: I4b42686496a03751b4136614af7f3ba0753bbf73