Yes we can use Management Layer for third party executable like tomcat, cassandra, flexlm etc.
We have to create an application object of type Third Party Server and fill the command line, arguments and working directory. Under the options, we need to have a section start_stop with the option start_command and stop_command. (In case of Windows Flexlm, i had a start_command with value pointing to flexlm_start.bat file)
Inside the flexlm_start.bat file, i had the following command net start “Flexlm Service” (where Flexlm Service is the name of the Windows Service for Flexlm)
I have done that when using Flexlm in Windows servers.
But don’t know, how it works in Linux 