Fix/suppress PMD CompareObjectsWithEquals findings (#11476)

Newer PMD versions discover more CompareObjectsWithEquals findings.

Related to https://github.com/openhab/static-code-analysis/pull/423

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.amazonechocontrol/src/main/java/org/openhab/binding/amazonechocontrol/internal/AccountServlet.java

@@ -173,7 +173,7 @@ public class AccountServlet extends HttpServlet {
                     + uri.substring(PROXY_URI_PART.length());
 
             String postData = null;
-            if (verb == "POST" || verb == "PUT") {
+            if ("POST".equals(verb) || "PUT".equals(verb)) {
                 postData = req.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
             }
 

bundles/org.openhab.binding.amazonechocontrol/src/main/java/org/openhab/binding/amazonechocontrol/internal/handler/FlashBriefingProfileHandler.java

@@ -157,6 +157,7 @@ public class FlashBriefingProfileHandler extends BaseThingHandler {
         }
     }
 
+    @SuppressWarnings("PMD.CompareObjectsWithEquals")
     public boolean initialize(AccountHandler handler, String currentConfigurationJson) {
         updateState(CHANNEL_SAVE, OnOffType.OFF);
         if (updatePlayOnDevice) {