do_reconfigure.yml is introduced to use serial directive. But we use
it in wrong. Now serial has moved to playbook file. So it is time to
remove the do_reconfigure.yml file
Closes-Bug: #1628152
Change-Id: I8d42d27e6bc302a0e575b0353956eaef9b2ca9fd
* add serial for reconfigure
* set playbook serial by using variable
* fix serial for barbican, influxdb and vmtp
Closes-Bug: #1624607
Change-Id: I66530c7736e1673a592eddbde75637825d12d9e2