Update apiVersion to operators.coreos.com/v1alpha1

csv is defined under operators.coreos.com group in the latest version
of OLM.

Author: darkowlzz

memcachedoperator.0.0.1.csv.yaml

@@ -1,7 +1,7 @@
 # This file defines the ClusterServiceVersion (CSV) to tell the catalog how to display, create and
 # manage the application as a whole. If changes are made to the CRD for this application kind,
 # make sure to replace those references below as well.
-apiVersion: app.coreos.com/v1alpha1
+apiVersion: operators.coreos.com/v1alpha1
 kind: ClusterServiceVersion-v1
 metadata:
   name: memcachedoperator.v0.0.1

memcachedoperator.0.0.2.csv.yaml

@@ -1,7 +1,7 @@
 # This file defines the ClusterServiceVersion (CSV) to tell the catalog how to display, create and
 # manage the application as a whole. If changes are made to the CRD for this application kind,
 # make sure to replace those references below as well.
-apiVersion: app.coreos.com/v1alpha1
+apiVersion: operators.coreos.com/v1alpha1
 kind: ClusterServiceVersion-v1
 metadata:
   name: memcachedoperator.v0.0.2