Fixes #4695: On AIX, check-rudder-agent script complains uses nonexistant options for ps and echo
Refs #4691: Make uuidgen script executable
Merge pull request #293 from jooooooon/bug_4695/on_aix_check_rudder_agent_script_complains_uses_nonexistant_options_for_ps_and_echo

Fixes #4695: On AIX, check-rudder-agent script complains uses nonexistan...