In fbc435ce16, we stopped passing
'parameters' to stack update call. This is backward incompatible
as the 'parameters' set for the stack before an upgrade would take
precedence over the ones set in 'parameter_defaults' of plan env.
Change-Id: Ia1d823386da687154c433136bf22ae6a0291573d
Closes-Bug: #1749636
(cherry picked from commit 7213aa5669)