Add Kubernetes manifests for routing engines

Deployments and Services for osrm-foot (256-512MB), osrm-bicycle
(256-512MB), and OTP (1-2GB). Includes PVCs for data storage and an
init Job to download and pre-process Greater London OSM data.

k8s/routing-pvcs.yaml

@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: osrm-data-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 2Gi
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: otp-data-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 2Gi