- Upgrade osrf-pycommon from 2.0.2 to 2.1.6 for ROS 2 Humble. - Sync osrf-pycommon 2.1.6 from humble branch to master - Add BuildRequires: python3-setuptools (needed by setup.py build in clean environment) - Upgrade osrf-pycommon from 2.0.2 to 2.1.6 for ROS 2 Humble. - Sync osrf-pycommon 2.1.6 from humble branch to master - Add BuildRequires: python3-setuptools (needed by setup.py build in clean environment)