Commits on Jun 6, 2019

1. Introduce new flag - strict-topology …

   With the current implementation, In delayed binding case, CSI driver is offered
   with all nodes topology that are matched with 'selected node' topology keys in
   CreateVolumeRequest.AccessibilityRequirements. So this allows the driver to
   select any node from the passed preferred list to create volume. But this
   results in scheduling failure when the volume created on a node other than
   Kubernetes selected node.
   
   To address this, introduced new flag "--strict-topology', when set, in case of
   delayed binding, the driver is offered with only selected node topology, so that
   driver has to create the volume on this node.
   
   Modified tests so that now every test is run with and without 'strict topology'.

   

   avalluri committed Jun 6, 2019
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