# - PYTHON_SCRIPTS_DIR - Path to directory holding the reservation script.
# - BUILD_TAG - Any string suitable as filename, identifying
# test run executing this function. May be unset.
# - PYTHON_SCRIPTS_DIR - Path to directory holding the reservation script.
# - BUILD_TAG - Any string suitable as filename, identifying
# test run executing this function. May be unset.
# Variables set:
# - TOPOLOGIES - Array of paths to topologies, with failed cleanups removed.
# - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.
# Variables set:
# - TOPOLOGIES - Array of paths to topologies, with failed cleanups removed.
# - WORKING_TOPOLOGY - Path to topology yaml file of the reserved testbed.