Simulated annealing does not create temperature variable for the algorithm

[gkronber]

Simulated annealing assigns a value to a LookupParameter called Temperature in its main loop (using Assigner). However, the a variable for this is not created by the algorithm.

Therefore, if the problem has a Temperature variable it will be found in the lookup and SA will overwrite this value.

Proposed fix: SA should create the variable in the algorithm scope.