Add CI/CD and k8s

k8s/README.md

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+Deploy senpy to a kubernetes cluster.
+The files are templates, which need to be expanded with something like envsubst.
+
+Example usage:
+
+```
+cat k8s/*.ya*ml | envsubst | kubectl apply -n senpy -f -
+```

k8s/senpy-deployment.yaml

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+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: senpy-$NAME-latest
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        role: $NAME-latest
+        app: test
+    spec:
+      containers:
+      - name: senpy-latest
+        image: $IMAGEWTAG
+        imagePullPolicy: Always
+        resources:
+          limits:
+            memory: "512Mi"
+            cpu: "1000m"
+        ports:
+          - name: web
+            containerPort: 5000

k8s/senpy-ingress.yaml

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+---
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: senpy-$NAME-ingress
+spec:
+  rules:
+  - host: senpy.cluster.gsi.dit.upm.es
+    http:
+      paths:
+      - path: /
+        backend:
+          serviceName: senpy-$NAME-latest
+          servicePort: 5000

k8s/senpy-svc.yaml

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+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: senpy-$NAME-latest
+spec:
+  type: ClusterIP
+  ports:
+    - port: 5000
+      protocol: TCP
+  selector:
+    role: $NAME-latest