Replace Kubernetes YAML sed-replacements by Kustomize

Closes #17 (closed)

Change infrastructure of Kubernetes files for the uc applications and workload generators. The new structure is:
--uc-application
---- base
---- overlay
-------uc1-application
-------uc2-application

Also use Kustomize for building the files for deployment

execution/uc-application/base/aggregation-deployment.yaml

@@ -14,8 +14,8 @@ spec:
     spec:
       terminationGracePeriodSeconds: 0
       containers:
-      - name: uc3-application
-        image: "theodolite/theodolite-uc3-kstreams-app:latest"
+      - name: uc-application
+        image: uc-app:latest
         ports:
         - containerPort: 5555
           name: jmx
@@ -27,13 +27,13 @@ spec:
         - name: KAFKA_WINDOW_DURATION_MINUTES
           value: "1"
         - name: COMMIT_INTERVAL_MS
-          value: "{{KAFKA_STREAMS_COMMIT_INTERVAL_MS}}"
+          value: "100"
         - name: JAVA_OPTS
           value: "-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=5555"
         resources:
           limits:
-            memory: "{{MEMORY_LIMIT}}"
-            cpu: "{{CPU_LIMIT}}"
+            memory: 4Gi
+            cpu: 1000m
       - name: prometheus-jmx-exporter
         image: "solsson/kafka-prometheus-jmx-exporter@sha256:6f82e2b0464f50da8104acd7363fb9b995001ddff77d248379f8788e78946143"
         command: