Handle errors when updating unknown params of plan

Adds PlanParametersNotExist to common/exception.
Raises PlanParametersNotExist from PlansManager#set_parameter_values
if some parameter names are not found in environment.
Raised exception contains list of unknown parameters in message.
Test that exception is raised properly.
Test that exception message contains name of unknown parameters.

Change-Id: Iee998bf28462175680e6853731a8901ac3cd5335
Closes-Bug: #1003373
Merge "Handle errors when updating unknown params of plan"