Provide functionality to post internal metrics to multiple consumers
Add tenant and service id tag to each metric
add control plane service/tenant id to each metric
use request object instead of query param
configuration option to inject metric tags from http parameters
re-enable auth
Response to code review, migrate common code to common class, add unit tests to common code, remove prefix tag configuration
Changes in response to code review

  - support both bean and yaml poster configurations
  - removed MetricReporter builder - migrated functionality back to
    ManagedReporter
  - ZenossMetricsReporter takes start/stop frequency and timeout
    configuration parameters
Merge branch 'develop' into feature/post_internal_metrics
Fix failing build (remove duplicate definitions)
Merge pull request #24 from zenoss/feature/post_internal_metrics

Feature/post internal metrics