anchor.diff:      ## Event Filters
   
       Event filters allow users to selectively enable or disable the processing of
  -    firehose events by the Stackdriver Nozzle. The default behaviour is to process
  -    all events. Events that match a blacklist filter will not be processed unless
  -    they also match a whitelist filter.
  +    firehose events by the Stackdriver Nozzle. Events that match a blacklist filter
  +    will not be processed unless they also match a whitelist filter.
  +
  +    **IMPORTANT:** The Nozzle tile configures a default black/whitelist combination that
  +    whitelists only Pivotal's Key Performance / Capacity Scaling Indicators for
  +    transmission to Stackdriver Monitoring, because Stackdriver limits users to 500
  +    custom metric descriptors. **Removing the blacklist may result in this limit being hit.**
  +
  +    *   **PCF KPIs:** https://docs.pivotal.io/pivotalcf/2-0/monitoring/kpi.html
  +    *   **PCF KCSIs:** https://docs.pivotal.io/pivotalcf/2-0/monitoring/key-cap-scaling.html
   
       A filter rule has three elements.
   
  
positive.code:     label: Event Blacklist
      description: Events matching these blacklist filters will not be propagated to Stackdriver.
      configurable: true
      optional: true
      property_blueprints:
      - name: description
        type: string
  
negative.code:     label: Event Whitelist
      description: Events matching these whitelist filters will be propagated to Stackdriver even if they match a blacklist filter above.
      configurable: true
      default:
      - description: Whitelist auctioneer KPI metrics.
        type: name
        regexp: 'auctioneer\.LockHeld|auctioneer\.Auctioneer.*'
        sink: monitoring
      - description: Whitelist bbs KPI metrics.
        type: name
        regexp: 'bbs\.(LockHeld|RequestLatency)|bbs\.Domain\..*|bbs\..*LRP.*'
        sink: monitoring
      - description: Whitelist rep KPI metrics.
        type: name
        regexp: 'rep\.Capacity(Remaining|Total)(Memory|Disk|Containers)|rep\.RepBulkSyncDuration|rep\.UnhealthyCell'
        sink: monitoring
      - description: Whitelist locket KPI metrics.
        type: name
        regexp: 'locket\.Active.*'
        sink: monitoring
      - description: Whitelist route_emitter KPI metrics.
        type: name
        regexp: 'route_emitter\.MessagesEmitted|route_emitter\..*Route.*'
        sink: monitoring
      - description: Whitelist MySQL KPI metrics.
        type: name
        regexp: '/mysql/.*'
        sink: monitoring
      - description: Whitelist gorouter KPI metrics.
        type: name
        regexp: 'gorouter\.(file_descriptors|backend_exhausted_conns|ms_since_last_registry_update|total_routes|registry_message\.route-emitter)'
        sink: monitoring
      - description: Whitelist gorouter response metrics.
        type: name
        regexp: 'gorouter\.(total_requests|latency.*|responses.*|bad_gateways)'
        sink: monitoring
      - description: Whitelist UAA KPI metrics.
        type: name
        regexp: 'uaa\.requests\.global\.completed\.count|uaa\.server\.inflight\.count'
        sink: monitoring
      - description: Whitelist loggregator KPI metrics.
        type: name
        regexp: 'loggregator\.(doppler|rlp)\.(ingress|dropped)'
        sink: monitoring
      - description: Whitelist Doppler KPI metrics.
        type: name
        regexp: 'DopplerServer\.listeners\.totalReceivedMessageCount|DopplerServer\.doppler\.shedEnvelopes'
        sink: monitoring
      - description: Whitelist syslog KPI metrics.
        type: name
        regexp: '(scalablesyslog|cf-syslog-drain)\.(adapter\.(ingress|dropped)|scheduler\.drains)'
        sink: monitoring
      - description: Whitelist BOSH system KPI metrics.
        type: name
        regexp: 'system\..*'
        sink: monitoring
      - description: Whitelist metrics derived or republished by Healthwatch.
        type: name
        regexp: 'health(watch)?\..*'
        sink: monitoring
      property_blueprints:
      - name: description
        type: string
  