Javadoc and other java 1_8 compatible changes in 50x back to main. (#1328)

Closes #1327.

src/test/java/org/springframework/data/couchbase/util/ClusterInvocationProvider.java

@@ -31,7 +31,6 @@ import org.junit.platform.commons.support.AnnotationSupport;
  * <p>
  * Note that the internals on what and how the containers are managed is up to the {@link TestCluster} implementation,
  * and if it is unmanaged than this very well be mostly a "stub".
- * </p>
  *
  * @since 2.0.0
  */

src/test/java/org/springframework/data/couchbase/util/TestClusterConfig.java

@@ -79,7 +79,6 @@ public class TestClusterConfig {
 	 * Finds the first node with a given service enabled in the config.
 	 * <p>
 	 * This method can be used to find bootstrap nodes and similar.
-	 * </p>
 	 *
 	 * @param service the service to find.
 	 * @return a node config if found, empty otherwise.

src/test/java/org/springframework/data/couchbase/util/Util.java

@@ -33,7 +33,7 @@ public class Util {
    * Waits and sleeps for a little bit of time until the given condition is met.
    *
    * <p>Sleeps 1ms between "false" invocations. It will wait at most one minute to prevent hanging forever in case
-   * the condition never becomes true.</p>
+   * the condition never becomes true.
    *
    * @param supplier return true once it should stop waiting.
    */
@@ -83,7 +83,7 @@ public class Util {
    * Reads a file from the resources folder (in the same path as the requesting test class).
    *
    * <p>The class will be automatically loaded relative to the namespace and converted
-   * to a string.</p>
+   * to a string.
    *
    * @param filename the filename of the resource.
    * @param clazz    the reference class.