Search for Karaf/Fuse runtimes recursively

• go to preferences page
• Server -> Runtime Environments
• Search...
• specify a folder which contains a karaf/fuse runtime not as first children (but second level for instance)
  --> it will be nice to detect the runtime

the use case that i have in mind is I have one folder with several version of Karaf/Fuse runtimes and want to search for all of them available in it.