remove dev preview from olm file in preparation for GA (#91)

Issue #, if available:
N/A

Description of changes:
Removing dev preview to prepare for GA as well as adding in the missing kinds to the samples section, so the CSV is fully filled out.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: acornett21

olm/olmconfig.yaml

@@ -18,7 +18,7 @@ description: |-
 
 
   This controller is a component of the [AWS Controller for Kubernetes](https://github.com/aws/aws-controllers-k8s)
-  project. This project is currently in **developer preview**.
+  project.
 
 
   **Pre-Installation Steps**
@@ -40,6 +40,14 @@ samples:
   spec: '{}'
 - kind: TransitGateway
   spec: '{}'
+- kind: Instance
+  spec: '{}'
+- kind: DHCPOptions
+  spec: '{}'
+- kind: NATGateway
+  spec: '{}'
+- kind: ElasticIPAddress
+  spec: '{}'
 maintainers:
 - name: "ec2 maintainer team"
   email: "[email protected]"