Corey Zuares

[prometheus-elasticsearch-exporter] Add support for PodMonitoring

3

#### What this PR does / why we need it: This PR adds support for optionally creating a `PodMonitoring` resource. This resource is used by GCP's hosted prometheus metrics collection...

The `apiVersion: apps/v1beta2` in the [deployment.yaml](https://github.com/cloudposse/prometheus-to-cloudwatch/blob/master/chart/templates/deployment.yaml#L1) has been deprecated as of Kubernetes 1.16. Please consider updating this to the `apps/v1` apiVersion or introducing some backwards compatibility if needed.

## What's Changed Previously, the `invert` flag in the task configuration was ignored during task execution. This change honors the flag when set at the task target level.