This introduces a script to run cloud-cleaner with a schedule. It's
currently working with Azure only and therefore needed a change to
cloud-cleaner code as well. Using azure-cli it gets a list of resources
from $AZURE_RESOURCE_GROUP and then sorts out only resources that
are older than $HOURS_BACK and are not storage accounts.
Then it processes the list further leaving only list with unique
TEST_ID to supply to the cloud-cleaner.
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