Sync tools/*-requires with openstack/requirements.
Sync tools/*-requires with openstack/requirements.

* sphinxcontrib-httpdomain is now included to the opentstack/requirements

Change-Id: I2f8f870db915cf8a846791e46386c6cf23ac0908

xme1226/sahara,zhangjunli177/sahara,tellesnobrega/storm_plugin,egafford/sahara,zhujzhuo/Sahara,esikachev/sahara-backup,esikachev/sahara-backup,crobby/sahara,xme1226/sahara,citrix-openstack-build/sahara,xme1226/sahara,matips/iosr-2015,esikachev/scenario,matips/iosr-2015,tellesnobrega/sahara,crobby/sahara,ekasitk/sahara,bigfootproject/sahara,zhangjunli177/sahara,esikachev/scenario,keedio/sahara,citrix-openstack-build/sahara,redhat-openstack/sahara,esikachev/sahara-backup,tellesnobrega/storm_plugin,bigfootproject/sahara,mapr/sahara,esikachev/scenario,keedio/sahara,redhat-openstack/sahara,henaras/sahara,bigfootproject/sahara,zhangjunli177/sahara,henaras/sahara,ekasitk/sahara,tellesnobrega/storm_plugin,ekasitk/sahara,rnirmal/savanna,openstack/sahara,crobby/sahara,rnirmal/savanna,egafford/sahara,redhat-openstack/sahara,citrix-openstack-build/sahara,zhujzhuo/Sahara,matips/iosr-2015,openstack/sahara,mapr/sahara,tellesnobrega/sahara,henaras/sahara,keedio/sahara,zhujzhuo/Sahara,mapr/sahara