Fix namespace declarations in Hazelcast xml's and make them consistent

spring-boot-actuator/src/test/resources/cache/test-hazelcast.xml

@@ -1,4 +1,8 @@
-<hazelcast>
+<hazelcast xsi:schemaLocation="http://www.hazelcast.com/schema/config hazelcast-config-3.5.xsd"
+		xmlns="http://www.hazelcast.com/schema/config"
+		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+
 	<map name="books"/>
 	<map name="players"/>
-</hazelcast>
+
+</hazelcast>

spring-boot-samples/spring-boot-sample-cache/src/main/resources/hazelcast.xml

@@ -1,4 +1,4 @@
-<hazelcast xsi:schemaLocation="http://www.hazelcast.com/schema/config hazelcast-config-3.4.xsd"
+<hazelcast xsi:schemaLocation="http://www.hazelcast.com/schema/config hazelcast-config-3.5.xsd"
 		   xmlns="http://www.hazelcast.com/schema/config"
 		   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 
@@ -14,4 +14,4 @@
 		<management-enabled>true</management-enabled>
 	</cache>
 
-</hazelcast>
+</hazelcast>