created spec for appl creator and added a test that ensures that vms on active sites are being considered as candidates when trying to reuse instances
created spec for appl creator and added a test that ensures that vms on active sites are being considered as candidates when trying to reuse instances

dice-cyfronet/atmosphere,donpiekarz/atmosphere,dice-cyfronet/atmosphere,donpiekarz/atmosphere,donpiekarz/atmosphere,dice-cyfronet/atmosphere