CSIT-1142 Change thread perf test TAGs

Due to automatization of SMT detection this change is suppose to
remove static thread/core tags in favor of dynamic one. Leaving the
static tags for number of physical cores to be able to select TCs.

Change-Id: I7f99f605821f363e45c333f46d1dea786693521b
Signed-off-by: Peter Mikus <pmikus@cisco.com>