Rearrange deployment files into kustomizations

deploy/aws/l7/kustomization.yaml

@@ -0,0 +1,13 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+bases:
+- ../../cloud-generic
+patchesStrategicMerge:
+- service-l7.yaml
+configMapGenerator:
+- name: nginx-configuration
+  behavior: merge
+  literals:
+  - use-proxy-protocol=false
+  - use-forwarded-headers=true
+  - proxy-real-ip-cidr=0.0.0.0/0 # restrict this to the IP addresses of ELB