Redis handler and Redis heuristic calculator, plus tests.

# Conflicts:
#	client-java/controller/src/main/java/org/evomaster/client/java/controller/internal/db/RedisHandler.java
#	client-java/controller/src/main/java/org/evomaster/client/java/controller/redis/RedisClient.java
#	client-java/controller/src/main/java/org/evomaster/client/java/controller/redis/RedisHeuristicsCalculator.java
#	client-java/controller/src/test/java/org/evomaster/client/java/controller/internal/db/redis/RedisHandlerIntegrationTest.java
#	client-java/controller/src/test/java/org/evomaster/client/java/controller/internal/db/redis/RedisHeuristicsCalculatorTest.java

Author: aszyrej

client-java/controller/pom.xml

@@ -134,6 +134,10 @@
             <groupId>io.rest-assured</groupId>
             <artifactId>rest-assured</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-redis</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest-all</artifactId>