cluster-launch-installer-e2e: Change 'destroy-cluster' -> 'destroy cluster'

Catching up with openshift/installer@3f4fe574 (cmd/openshift-install:
Add 'destroy bootstrap' command, openshift/installer#493).

Also change 'cluster' -> 'create cluster' to catch up with
openshift/installer@85c76c98 (cmd/openshift-install: Push creation
under 'openshift create', 2018-10-22, openshift/installer#513).

Author: wking

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

@@ -268,7 +268,7 @@ objects:
         /bin/openshift-install version >/tmp/artifacts/installer/version
 
         export _CI_ONLY_STAY_AWAY_OPENSHIFT_INSTALL_AWS_USER_TAGS="{\"expirationDate\": \"$(date -d '4 hours' --iso=minutes --utc)\"}"
-        /bin/openshift-install --dir=/tmp/artifacts/installer --log-level=debug cluster &
+        /bin/openshift-install --dir=/tmp/artifacts/installer --log-level=debug create cluster &
         wait "$!"
 
     # Performs cleanup of all created resources
@@ -358,7 +358,7 @@ objects:
 
           echo "Deprovisioning cluster ..."
           export AWS_SHARED_CREDENTIALS_FILE=/etc/openshift-installer/.awscred
-          openshift-install --dir /tmp/artifacts/installer --log-level debug destroy-cluster
+          openshift-install --dir /tmp/artifacts/installer --log-level debug destroy cluster
         }
 
         trap 'teardown' EXIT