Upgrade to Apache Cassandra 3.11.4

Closes gh-282

.travis.yml

@@ -32,10 +32,10 @@ before_install:
 
 install:
   - mkdir -p download
-  - test -f download/apache-cassandra-2.2.8-bin.tar.gz || wget https://archive.apache.org/dist/cassandra/2.2.8/apache-cassandra-2.2.8-bin.tar.gz -O download/apache-cassandra-2.2.8-bin.tar.gz
-  - tar xzf download/apache-cassandra-2.2.8-bin.tar.gz
-  - cp -f spring-cloud-vault-config-databases/src/test/resources/cassandra.yaml apache-cassandra-2.2.8/conf
-  - apache-cassandra-2.2.8/bin/cassandra
+  - test -f download/apache-cassandra-3.11.4-bin.tar.gz || wget https://archive.apache.org/dist/cassandra/3.11.4/apache-cassandra-3.11.4-bin.tar.gz -O download/apache-cassandra-3.11.4-bin.tar.gz
+  - tar xzf download/apache-cassandra-3.11.4-bin.tar.gz
+  - cp -f spring-cloud-vault-config-databases/src/test/resources/cassandra.yaml apache-cassandra-3.11.4/conf
+  - apache-cassandra-3.11.4/bin/cassandra
   - src/test/bash/create_certificates.sh
   - src/test/bash/install_vault.sh
   - src/test/bash/install_consul.sh
@@ -51,12 +51,12 @@ before_script:
   - |-
     mongo admin --eval  "db.createUser({user: 'springvault', pwd:'springvault', roles:['root']});"
   - sleep 30 # wait until Cassandra is up
-  - apache-cassandra-2.2.8/bin/cqlsh localhost -u cassandra -p cassandra -e "CREATE USER 'springvault' WITH PASSWORD 'springvault' SUPERUSER"
+  - apache-cassandra-3.11.4/bin/cqlsh localhost -u cassandra -p cassandra -e "CREATE USER 'springvault' WITH PASSWORD 'springvault' SUPERUSER"
 
 script: mvn clean verify -Pspring,java8
 
 after_script:
-  - apache-cassandra-2.2.8/bin/nodetool stopdaemon
+  - apache-cassandra-3.11.4/bin/nodetool stopdaemon
   - pkill vault
   - pkill consul
 

spring-cloud-vault-config-databases/src/test/java/org/springframework/cloud/vault/config/databases/CassandraSecretIntegrationTests.java

@@ -78,10 +78,11 @@ public class CassandraSecretIntegrationTests extends IntegrationTestSupport {
 
 		VaultOperations vaultOperations = this.vaultRule.prepare().getVaultOperations();
 
-		Map<String, String> connection = new HashMap<>();
+		Map<String, Object> connection = new HashMap<>();
 		connection.put("hosts", CASSANDRA_HOST);
 		connection.put("username", CASSANDRA_USERNAME);
 		connection.put("password", CASSANDRA_PASSWORD);
+		connection.put("protocol_version", 3);
 
 		vaultOperations.write(
 				String.format("%s/config/connection", this.cassandra.getBackend()),

spring-cloud-vault-config-databases/src/test/java/org/springframework/cloud/vault/config/databases/VaultConfigCassandraTests.java

@@ -92,10 +92,11 @@ public class VaultConfigCassandraTests {
 
 		VaultOperations vaultOperations = vaultRule.prepare().getVaultOperations();
 
-		Map<String, String> connection = new HashMap<>();
+		Map<String, Object> connection = new HashMap<>();
 		connection.put("hosts", CASSANDRA_HOST);
 		connection.put("username", CASSANDRA_USERNAME);
 		connection.put("password", CASSANDRA_PASSWORD);
+		connection.put("protocol_version", 3);
 
 		vaultOperations.write(String.format("%s/config/connection", "cassandra"),
 				connection);