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
(cherry picked from commit 1a7af3e10b460056cdcb0923ac7f9eb9608ab92e)

negronjl/kolla,negronjl/kolla,negronjl/kolla