RSM

...G...... [DEV-1153] server listener improvements

* commit 'bf10c35ea0d6309240ff4c0401ab0f2b69de2b96':
  ...G...... [DEV-1153] reverted changes to configuration file
  .......... [DEV-1153] for consistency changed passive check detection from itemid==0 to clientid==0
  .......... [DEV-1153] changed item key parser to return generic error
  .......... [DEV-1153] remove control channel closing on exit
  .......... [DEV-1153] added check for empty key name to item key parser
  ...G...... [DEV-1153] style fix, don't set error from function that does not return error
  ...G...... [DEV-1153] style fix, moved adding request to else instead of checking for err
  ...G...... [DEV-1153] don't search for exporter task if itemid is 0
  ...G...... [DEV-1153] avoid redundant parameter
  ...G...... [DEV-1153] improved debug
  ...G...... [DEV-1153] improved debug
  ...G...... [DEV-1153] improved handling of invalid keys
  ...G...... [DEV-1153] improved logging of request and response
  ...G...... [DEV-1153] don't allocate additional byte for null terminator; avoid redundant variable; removed empty branch