Sentinel Release v0.0.3

New observable resources.
More resilient handling of bogus http responses.
Helm chart for Kubernetes deployment.
Updated OpenShift deployment template.

Sentinel Release v0.0.2

Implements the webhook publisher
Implements the broker publisher

Sentinel Release v0.0.1

Initial release of Sentinel:

• Integrates with Kubernetes 1.11.x (OpenShift 3.11.x)
• Implements Logger publisher only at this stage (output to stdout or file)

Webhook and Broker publishers will be implemented in subsequent releases.