tests: Increase bug-865825.t wait time for self-heal daemon

BUG: 1084653
Change-Id: I057bbd2e50803344552314b32d2d0e6240bf9604
Signed-off-by: Justin Clift <justin@gluster.org>
Reviewed-on: http://review.gluster.org/7404
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>