Incorrect parameter for scheduleVBDeletion

This caused completeBeforeShutdown to be set
to false, in resetVBucket/deleteVBucket
scenarios.

Change-Id: I72a1f07f475af49a7f368695a8e83cf2c5df9e28
Reviewed-on: http://review.couchbase.org/40593
Reviewed-by: Sundararaman Sridharan <sundar@couchbase.com>
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>