CLOUDSTACK-3580
simulator supports migration

Add simultor to the seemingly strict filter which should happen within
the hypervisor resource and not the virtualmachine :/

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
(cherry picked from commit 3d4d350dbe9728d3de42e4ee7a6ad06c6e10fced)
Fix a few typos in ConfigurationManager.

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
(cherry picked from commit c78ed39b2f53a3544b93515e6bb4889eef8c5888)
add debug message

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
(cherry picked from commit 56043eb6cf3835f541c65675666ad082f91f49d9)