Pin Ansible version to 2.1.1.0 in kolla-toolbox
Pin Ansible version to 2.1.1.0 in kolla-toolbox

Use a fixed and released Ansible version to keep stability.

Change-Id: I885816d85249b15be91b5a101718a05841a20c18
Closes-Bug: #1615350

stackforge/kolla,nihilifer/kolla,GalenMa/kolla,mandre/kolla,stackforge/kolla,openstack/kolla,coolsvap/kolla,coolsvap/kolla,openstack/kolla,nihilifer/kolla,rahulunair/kolla,mrangana/kolla,dardelean/kolla-ansible,GalenMa/kolla,rahulunair/kolla,coolsvap/kolla,intel-onp/kolla,mandre/kolla,dardelean/kolla-ansible,intel-onp/kolla,mandre/kolla,mrangana/kolla,dardelean/kolla-ansible,stackforge/kolla