Increase aws e2e cluster from 2 to 3 availability zones

Signed-off-by: David Vossel <[email protected]>

Author: davidvossel

ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml

@@ -737,6 +737,7 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
+              - us-east-1c
         compute:
         - name: worker
           replicas: 3
@@ -746,6 +747,7 @@ objects:
               zones:
               - us-east-1a
               - us-east-1b
+              - us-east-1c
         platform:
           aws:
             region:       ${AWS_REGION}