MRP-1574 obdclass: don't return NULL in cl_object_find

cl_file_inode_init doesn't handle case when cl_object_find returns NULL.
As a result later we have NULL pointer handling in
cl_io_init->cl_object_top->cl_object_header.

Change-Id: I0012236dfc52ccd689291c3e4df081c6e58f6183
Signed-off-by: Sergey Cheremencev <sergey_cheremencev@xyratex.com>
Reviewed-by: Vitaly Fertman <vitaly.fertman@seagate.com>
Reviewed-by: Alexander Boyko <alexander.boyko@seagate.com>
Tested-by: Elena Gryaznova <elena.gryaznova@seagate.com>
Tested-by: Jenkins
Reviewed-on: http://es-gerrit.xyus.xyratex.com:8080/3503
MRP-2206 Tests: Expected progress update after at least 5 secs

script updated to cover boundary condition
Ex:  Suppose the operation completes in the 5th second but
(4-5) our elapsed time calculation does not take fractions of
5th sec to consideration, so elapsed will be rounded off to 4
So we can add 1 to elapsed time to consider fraction case
and which will be rounded off to 5

Even after this if test_60 fails with same failure then
copytool need to be verified for band width logic

Change-Id: I1168468437edce2cd7b9d0a1bd28b1c22aa81a11
Signed-off-by: gaurav mahajan <gaurav.mahajan@seagate.com>
Reviewed-on: http://es-gerrit.xyus.xyratex.com:8080/4752
Reviewed-by: Artem Blagodarenko <artem.blagodarenko@seagate.com>
Tested-by: Jenkins
Reviewed-by: Alexander Zarochentsev <alexander.zarochentsev@seagate.com>
Reviewed-by: Elena Gryaznova <elena.gryaznova@seagate.com>
Tested-by: Elena Gryaznova <elena.gryaznova@seagate.com>
Reviewed-by: Vitaly Fertman <vitaly.fertman@seagate.com>