asan: add qa/lsan.supp for leak sanitizer suppressions

asan: add qa/lsan.supp for leak sanitizer suppressions

any executable that links against the heap_profiler leaks 8 bytes for a
singleton:
> -----------------------------------------------------
> Suppressions used:
> count      bytes template
> 1          8 ^MallocExtension::Register
> -----------------------------------------------------

the python script bin/ceph has a lot of leaks:
> -----------------------------------------------------
> Suppressions used:
>   count      bytes template
>     205     294983 ^PyObject_Malloc
>      10       6216 ^_PyObject_Realloc
>       1        568 ^PyMem_Calloc
>       2          2 ^PyMem_Malloc
>      63      58935 ^PyUnicode_New
>      10       7294 ^_PyBytes_FromSize
>     166     149904 ^_PyObject_GC_Alloc
>       5       3360 ^_PyObject_GC_Resize
> -----------------------------------------------------

Signed-off-by: Casey Bodley <cbodley@redhat.com>