Update nginx-ingress components replica count from 2 to 1

Signed-off-by: Rémy Coutable <remy@rymai.me>

scripts/review_apps/base-config.yaml

@@ -111,7 +111,6 @@ nginx-ingress:
   controller:
     config:
       ssl-ciphers: ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4
-    replicaCount: 2
     resources:
       requests:
         cpu: 100m
@@ -119,7 +118,6 @@ nginx-ingress:
       limits:
         cpu: 200m
         memory: 675M
-    minAvailable: 1
     service:
       enableHttp: false
     livenessProbe:
@@ -134,7 +132,6 @@ nginx-ingress:
       limits:
         cpu: 10m
         memory: 24M
-    replicaCount: 1
 postgresql:
   metrics:
     enabled: false