Removing cache config option
Removing cache config option

* fixes error (Unknown configuration section 'cache')

Change-Id: I507aee9f68666d9bf296671f965ac39b90754183

apealive-cookbooks/openstack-chef-repo,sathvikm/openstack,mohitsethi/openstack-chef-repo,AlphaStaxLLC/openstack-chef-repo,mohitsethi/openstack-chef-repo,csibbitt/openstack-chef-repo,sathvikm/openstack,mancdaz/openstack-chef-repo,zxcq/chef-openstack-icehouse-ubuntu-14.04,kevinlowrie/openstack-chef-repo,mbednarz/chef-repo,AlphaStaxLLC/openstack-chef-repo,kevinlowrie/openstack-chef-repo,Kmotiko/openstack-chef-repo,mattray/openstack-chef-repo,apealive-cookbooks/openstack-chef-repo,Kmotiko/openstack-chef-repo,csibbitt/openstack-chef-repo,ramonskie/openstack-chef-repo