Add scale to beam samza docker-compose files

theodolite-benchmarks/docker-test/uc1-beam-samza/docker-compose.yml

-version: '2'
+version: '2.2'
 services:
   zookeeper:
     image: confluentinc/cp-zookeeper
@@ -33,11 +33,12 @@ services:
       SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: 'zookeeper:2181'
   benchmark:
     image: uc1-beam-samza:latest
+    scale: 1
     depends_on:
       - schema-registry
       - kafka
     environment:
-      MAX_SOURCE_PARALLELISM: 1
+      MAX_SOURCE_PARALLELISM: 1024
       KAFKA_BOOTSTRAP_SERVERS: kafka:9092
       SCHEMA_REGISTRY_URL: http://schema-registry:8081
   load-generator: 

theodolite-benchmarks/docker-test/uc2-beam-samza/docker-compose.yml

-version: '2'
+version: '2.2'
 services:
   zookeeper:
     image: confluentinc/cp-zookeeper
@@ -33,11 +33,12 @@ services:
       SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: 'zookeeper:2181'
   benchmark:
     image: uc2-beam-samza:latest
+    scale: 1
     depends_on:
       - schema-registry
       - kafka
     environment:
-      MAX_SOURCE_PARALLELISM: 1
+      MAX_SOURCE_PARALLELISM: 1024
       KAFKA_BOOTSTRAP_SERVERS: kafka:9092
       SCHEMA_REGISTRY_URL: http://schema-registry:8081
       KAFKA_WINDOW_DURATION_MINUTES: 60

theodolite-benchmarks/docker-test/uc3-beam-samza/docker-compose.yml

-version: '2'
+version: '2.2'
 services:
   zookeeper:
     image: confluentinc/cp-zookeeper
@@ -33,11 +33,12 @@ services:
       SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: 'zookeeper:2181'
   benchmark:
     image: uc3-beam-samza:latest
+    scale: 1
     depends_on:
       - schema-registry
       - kafka
     environment:
-      MAX_SOURCE_PARALLELISM: 1
+      MAX_SOURCE_PARALLELISM: 1024
       KAFKA_BOOTSTRAP_SERVERS: kafka:9092
       SCHEMA_REGISTRY_URL: http://schema-registry:8081
   load-generator: 

theodolite-benchmarks/docker-test/uc4-beam-samza/docker-compose.yml

-version: '2'
+version: '2.2'
 services:
   zookeeper:
     image: confluentinc/cp-zookeeper
@@ -33,11 +33,12 @@ services:
       SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: 'zookeeper:2181'
   benchmark:
     image: uc4-beam-samza:latest
+    scale: 1
     depends_on:
       - schema-registry
       - kafka
     environment:
-      MAX_SOURCE_PARALLELISM: 1
+      MAX_SOURCE_PARALLELISM: 1024
       KAFKA_BOOTSTRAP_SERVERS: kafka:9092
       SCHEMA_REGISTRY_URL: http://schema-registry:8081
   load-generator: