add fixture support to ROOT_ADD_TEST
add fixture support to ROOT_ADD_TEST

ROOT_ADD_TEST now takes FIXTURES_SETUP, FIXTURES_CLEANUP and
FIXTURES_REQUIRED arguments (lists)

also add RESOURCE_LOCK to prevent parallel execution of a test
takes a single lock name

n.b: fixtures and resource lock namespaces are each different from
test namespaces

olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root