Fixes #3803: rudder-agent init script ignores the /opt/rudder/etc/disable-agent flag file
Merge pull request #91 from jooooooon/bug_3803/rudder_agent_init_script_ignores_the_opt_rudder_etc_disable_agent_flag_file

Fixes #3803: rudder-agent init script ignores the /opt/rudder/etc/disabl...