PTX-1782 Fix VolumeDriverAppDown logic for deleting and validating apps and volumes (#315)
PTX-1782 Fix VolumeDriverAppDown logic for deleting and validating apps and volumes (#315)

Signed-off-by: nikolaypopov <fb86abc5f33e5ddb5a74b3899f60970c7419d9cb@gmail.com>
piyush-nimbalkar/torpedo,piyush-nimbalkar/torpedo,piyush-nimbalkar/torpedo