integration: deleting the stack sometimes timeout

This increase a bit the timeout to let more time to heat to
cleanup the whole stack.

Change-Id: I8247ccef93f920c525739c5bf4ec1af217ec7fc8
1 file changed
tree: b2dde921f9c394810f7204b2b7f4ce049cba6b5a
  1. ceilometer/