RSM

.......... [DEV-1153] added server listener with old style passive check support

* commit 'efd9a85356dffb12892a5179403f660f8e31132a':
  .......... [DEV-1153] improved scheduler loggin
  .......... [DEV-1153] added client id to result cache to use for logging, fixed passive check test case
  .......... [DEV-1153] added empty debug plugin and fixed crashes on empty (nil) export values
  .......... [DEV-1153] added uncommited files
  .......... [DEV-1153] moved server listener to separate package
  .......... [DEV-1153] fixed rebase conflicts
  .......... [DEV-1153] fixed typo
  .......... [DEV-1153] improved passive checks error logging
  .......... [DEV-1153] added test cases for 0 client (passive checks) expiry
  .......... [DEV-1153] reworked listener to remove redundant control channel
  .......... [DEV-1153] slightly reworked listener to avoid forced timeouts each second for control channel checking
  .......... [DEV-1153] added passive check support