Use fewer pod replicas in testing deployments

We don't need the resiliancy of 3 replicas for generic-test-app deployments
during acceptance tests.  Explicitly set `replicas: 1` in our deployments to
reduce pod utilization.

Signed-off-by: Andy Sadler <[email protected]>

test/acceptance/features/steps/openshift.py

@@ -101,7 +101,7 @@ def __init__(self):
   labels:
     app: myapp
 spec:
-  replicas: 3
+  replicas: 1
   selector:
     matchLabels:
       app: myapp