correctly specify that ActiveMNS & co are singleton classes #3073
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This was overlooked when porting to Python 3.
While the
__metaclass__ = Singletonthat specifies a singleton class in Python 2 does no harm when using Python 3, it's blatantly ignored when using Python 3, soActiveMNSisn't a singleton class at all then...This is important w.r.t. the time required for running the easyconfig test suite, to avoid that 475k (identical)
ActiveMNSinstances are created...