feat(k8s): adding kubernetes support

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

ref #10

misc/k8s/kustomization/base/resources/bouncer-admin/files/config.yml

@@ -0,0 +1,36 @@
+admin:
+  http:
+    host: 127.0.0.1
+    port: 8081
+  cors:
+    allowedOrigins:
+    - http://localhost:3001
+    allowCredentials: true
+    allowMethods:
+    - POST
+    - GET
+    - PUT
+    - DELETE
+    allowedHeaders:
+    - Origin
+    - Accept
+    - Content-Type
+    - Authorization
+    - Sentry-Trace
+    debug: false
+  auth:
+    issuer: http://127.0.0.1:8081
+    privateKey: /etc/bouncer/admin-key.json
+  metrics:
+    enabled: true
+    endpoint: /.bouncer/metrics
+    basicAuth: null
+
+redis:
+  addresses:
+  - ${REDIS_SENTINEL_HOST}:${REDIS_SENTINEL_PORT}
+  master: "${REDIS_MASTER_NAME}"
+
+logger:
+  level: 3
+  format: human