Patch: Set duration of performance long tests to 10s

- JIRA: CSIT-77
Decrease duration time from 60 second to 10 second for all long
performance tests. This patch is preparation for replacement of linear
search for binary search.

Change-Id: I61fbec1dcaca73ba383690e695c3030d182a90f9
Signed-off-by: Peter Mikus <pmikus@cisco.com>