add delay before change to internal settings
add delay before change to internal settings

Change-Id: I43eb70fed577deb382a154df57c6d5f8c1d30bc1
Reviewed-on: http://review.couchbase.org/50912
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Venu Uppalapati <5c73d43f38c8de2bc4a2e4d15365e52f60b59dae@gmail.com>
Tested-by: Venu Uppalapati <5c73d43f38c8de2bc4a2e4d15365e52f60b59dae@gmail.com>

EricACooper/perfrunner,PaintScratcher/perfrunner,couchbase/perfrunner,thomas-couchbase/perfrunner,couchbase/perfrunner,EricACooper/perfrunner,thomas-couchbase/perfrunner,vmx/perfrunner,couchbase/perfrunner,dkao-cb/perfrunner,EricACooper/perfrunner,vmx/perfrunner,couchbase/perfrunner,mikewied/perfrunner,pavel-paulau/perfrunner,dkao-cb/perfrunner,pavel-paulau/perfrunner,EricACooper/perfrunner,mikewied/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,PaintScratcher/perfrunner