Use Titan CC Avro Records in UC App and Workload Generator

Closes #1, #10, #16, #18, and #34

See merge request !28

Add Distributed Workload Generator

Closes #18, #16, #10, and #28

See merge request !6

Clean up script names

Closes #37

See merge request !11

# Conflicts:
#   execution/uc1-workload-generator/deployment.yaml
#   execution/uc2-workload-generator/deployment.yaml
#   execution/uc3-workload-generator/deployment.yaml
#   execution/uc4-workload-generator/deployment.yaml

Resolve "Use Docker images from theodolite DockerHub organization"

Closes #55

See merge request !31

Resolve "Add deployment for Git tags"

Closes #57

See merge request !30

Resolve "Add equals/hash methods for serializable classes"

See merge request !29

As ints will not be null on a null check, better check for the values
of an int.

Merge branch '46-add-benchmarking-strategies' of git.se.informatik.uni-kiel.de:stu200776/spesb into 46-add-benchmarking-strategies

Send avro data with the producer to kafka.

Replace the kieker records with the avro records from titan.
Further use the builder pattern in the KafkaRecordSender to enable
creation with different parameters.

Abstract the Interface to be more generic.

Due to the merge the project was not possible to build with gradle.
Because both projects changed the gradle build file some properties
were not added to the correct places in the file.
Further in one configuration class the same property existed twice.
diff --git a/application-kafkastreams-commons/src/main/java/theodolite/commons/kafkastreams/ConfigurationKeys.java b/application-kafkastreams-commons/src/main/java/theodolite/commons/kafkastreams/ConfigurationKeys.java
index 61fb135..260dbba 100644
--- a/application-kafkastreams-commons/src/main/java/theodolite/commons/kafkastreams/ConfigurationKeys.java
+++ b/application-kafkastreams-commons/src/main/java/theodolite/commons/kafkastreams/ConfigurationKeys.java
@@ -15,10 +15,6 @@ public final class ConfigurationKeys {

   public static final String CACHE_MAX_BYTES_BUFFERING = "cache.max.bytes.buffering";

-  public static final String APPLICATION_NAME = "application.name";
-
-  public static final String APPLICATION_VERSION = "application.version";
-
   public static final String KAFKA_BOOTSTRAP_SERVERS = "kafka.bootstrap.servers";

   public static final String SCHEMA_REGISTRY_URL = "schema.registry.url";
diff --git a/build.gradle b/build.gradle
index 1caf1b6..797d103 100644
--- a/build.gradle
+++ b/build.gradle
@@ -69,9 +69,6 @@ configure(useCaseApplications) {
       implementation 'org.slf4j:slf4j-simple:1.6.1'
       implementation project(':application-kafkastreams-commons')

-      // These dependencies are used for the workload-generator-commmon
-      implementation project(':workload-generator-commons')
-
       // Use JUnit test framework
       testImplementation 'junit:junit:4.12'
   }
@@ -82,10 +79,13 @@ configure(useCaseGenerators) {
   dependencies {
       // These dependencies are used internally, and not exposed to consumers on their own compile classpath.
       // implementation('org.industrial-devops:titan-ccp-common:0.1.0-SNAPSHOT') { changing = true }
-      implementation('org.industrial-devops:titan-ccp-common-kafka:0.1.0-SNAPSHOT') { changing = true }
+      // implementation('org.industrial-devops:titan-ccp-common-kafka:0.1.0-SNAPSHOT') { changing = true }
       implementation 'com.google.guava:guava:24.1-jre'
       implementation 'org.jctools:jctools-core:2.1.1'
       implementation 'org.slf4j:slf4j-simple:1.6.1'
+
+      // These dependencies are used for the workload-generator-commmon
+      implementation project(':workload-generator-commons')

       // maintain build of generators
       implementation 'net.kieker-monitoring:kieker:1.14'
@@ -102,12 +102,12 @@ configure(commonProjects) {
       // These dependencies is exported to consumers, that is to say found on their compile classpath.
       api 'org.apache.kafka:kafka-clients:2.4.0'
       api('org.industrial-devops:titan-ccp-common:0.0.3-SNAPSHOT') { changing = true }
-      api 'net.kieker-monitoring:kieker:1.14-SNAPSHOT'
+      api 'net.kieker-monitoring:kieker:1.14'

       // These dependencies are used internally, and not exposed to consumers on their own compile classpath.
       implementation 'org.slf4j:slf4j-simple:1.6.1'
-      implementation('org.industrial-devops:titan-ccp-common:0.1.0-SNAPSHOT') { changing = true }
-      implementation('org.industrial-devops:titan-ccp-common-kafka:0.1.0-SNAPSHOT') { changing = true }
+      // implementation('org.industrial-devops:titan-ccp-common:0.1.0-SNAPSHOT') { changing = true }
+      // implementation('org.industrial-devops:titan-ccp-common-kafka:0.1.0-SNAPSHOT') { changing = true }

       // Use JUnit test framework
       testImplementation 'junit:junit:4.12'