Some simulators - like simics - may end up adding extraneous suffixes to
logged lines. This may cause some regex that match too much fail. This
patch fixes two such cases:
- regex to find RunID changed to only match valid hexadecimal
characters;
- regex to match start of testsuite changed to only match valid word
characters (0-9A-Za-z_).
Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>