Add option to generate load via HTTP

Closes #279 (closed)

theodolite-benchmarks/load-generator-commons/src/main/java/theodolite/commons/workloadgeneration/ConfigurationKeys.java

@@ -23,6 +23,8 @@ public final class ConfigurationKeys {
 
   public static final String THREADS = "THREADS";
 
+  public static final String TARGET = "TARGET";
+
   public static final String KAFKA_BOOTSTRAP_SERVERS = "KAFKA_BOOTSTRAP_SERVERS";
 
   public static final String SCHEMA_REGISTRY_URL = "SCHEMA_REGISTRY_URL";
@@ -35,6 +37,8 @@ public final class ConfigurationKeys {
 
   public static final String KAFKA_BUFFER_MEMORY = "KAFKA_BUFFER_MEMORY";
 
+  public static final String HTTP_URI = "HTTP_URI";
+
   private ConfigurationKeys() {}
 
 }