fix(deployment): number of replicas

unittests/deployment/deployment.yaml

@@ -27,6 +27,9 @@ tests:
         app.kubernetes.io/name: prometheus-postgres-exporter
         app.kubernetes.io/version: 0.1.0
         helm.sh/chart: prometheus-postgres-exporter-0.1.0
+  - equal:
+      path: spec.replicas
+      value: 1
   - contains:
       path: spec.template.spec.containers[0].envFrom
       content:
@@ -91,6 +94,14 @@ tests:
   - notExists:
       path: spec.template.spec.topologySpreadConstraints
 
+- it: Test custom replicas
+  set:
+    deployment.replicas: 3
+  asserts:
+  - equal:
+      path: spec.replicas
+      value: 3
+
 - it: Test additional arguments
   set:
     deployment.postgresExporter.args: