Exec permissions added to the savanna-manage command.
Exec permissions added to the savanna-manage command.

Change-Id: I718073f250b0c4019bd9a43c721e7ff771790feb

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