Send notifier.configured_options in payload

[waltjones]

Enables the diagnostic key under notifier showing user configured options. Anything set using configure, preconfigure, or reconfigure is included.

Example payload:

"notifier": {
    "version": "2.22.0", 
    "name": "rollbar-gem", 
    "configured_options": {
      "framework": "Rails: 5.2.2", 
      "access_token": "****", 
      "filepath": "Rails522.rollbar", 
      "environment": "development", 
      "js_options": {
        "captureUncaught": true, 
        "accessToken": "****"
      }, 
      "send_extra_frame_data": "all", 
      "js_enabled": true, 
      "sidekiq_threshold": 2, 
      "root": "/home/walt/projects/rollbar/rails522",
      "logger_level": "warn"
    }