feat(k8s): adding kubernetes support

Now we can use skaffold and deploy bouncer in a kubernetes cluster

ref #10

misc/k8s/kustomization/base/resources/redis/kustomization.yaml

@@ -0,0 +1,15 @@
+
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- ./resources/redis-cluster.yaml
+
+vars:
+- name: REDIS_SERVICE_NAME
+  objref:
+    name: bouncer-redis
+    apiVersion: databases.spotahome.com/v1
+    kind: RedisFailover
+  fieldref:
+    fieldpath: metadata.name