Extract information about leaked chunks from da_swap_lsan.so.

Extract information about leaked chunks from da_swap_lsan.so.

Since we want to send information about leaked chunks to host, we need somehow
extract it from liblsan.so. LSan provides couple of hooks to achieve this:

	- __lsan_get_leaked_objects_num: returns the number of leaked objects.
	- __lsan_get_leaked_objects_ptr: returns a pointer to array of leaked
	objects.

Just use these hooks to extract necessary information. When extraction is
completed, notify the host about this.

Change-Id: I8e779368ab440ab02a9ef0db753621720f27ec61
Signed-off-by: Maxim Ostapenko <m.ostapenko@samsung.com>