Properly invoke parent constructor to default Answer result to true.

api/src/com/cloud/agent/api/Answer.java

@@ -23,6 +23,7 @@ public class Answer extends Command {
     protected String details;
 
     protected Answer() {
+        this(null);
     }
 
     public Answer(Command command) {

core/src/com/cloud/agent/api/storage/CopyVolumeAnswer.java

@@ -24,6 +24,7 @@ public class CopyVolumeAnswer extends Answer {
 	private String volumePath;
 
 	protected CopyVolumeAnswer() {
+	    super();
     }
 
 	public CopyVolumeAnswer(Command command, boolean success, String details, String volumeFolder, String volumePath) {

core/src/com/cloud/agent/api/storage/CreateAnswer.java

@@ -23,6 +23,7 @@ public class CreateAnswer extends Answer {
     VolumeTO volume;
     boolean requestTemplateReload = false;
     protected CreateAnswer() {
+        super();
     }
 
     public CreateAnswer(CreateCommand cmd, VolumeTO volume) {

core/src/com/cloud/agent/api/storage/CreatePrivateTemplateAnswer.java

@@ -27,7 +27,9 @@ public class CreatePrivateTemplateAnswer extends Answer {
     private String _uniqueName;
     private ImageFormat _format;
 
-    public CreatePrivateTemplateAnswer() {}
+    public CreatePrivateTemplateAnswer() {
+        super();
+    }
 
     public CreatePrivateTemplateAnswer(Command cmd, boolean success, String result, String path, long virtualSize,
             long physicalSize, String uniqueName, ImageFormat format) {

core/src/com/cloud/agent/api/storage/ListTemplateAnswer.java

@@ -26,7 +26,7 @@ public class ListTemplateAnswer extends Answer  {
     private Map<String, TemplateProp> templateInfos;
 
 	public ListTemplateAnswer() {
-
+	    super();
 	}
 
 	public ListTemplateAnswer(String secUrl, Map<String, TemplateProp> templateInfos) {

core/src/com/cloud/agent/api/storage/ListVolumeAnswer.java

@@ -26,7 +26,7 @@ public class ListVolumeAnswer extends Answer {
     private Map<Long, TemplateProp> templateInfos;
 
 	public ListVolumeAnswer() {
-
+	    super();
 	}
 
 	public ListVolumeAnswer(String secUrl, Map<Long, TemplateProp> templateInfos) {

core/src/com/cloud/agent/api/storage/ManageVolumeAvailabilityAnswer.java

@@ -22,6 +22,7 @@ import com.cloud.agent.api.Command;
 public class ManageVolumeAvailabilityAnswer extends Answer {
 
 	protected ManageVolumeAvailabilityAnswer() {
+	    super();
     }
 
 	public ManageVolumeAvailabilityAnswer(Command command, boolean success, String details) {

core/src/com/cloud/agent/api/storage/PrimaryStorageDownloadAnswer.java

@@ -23,6 +23,7 @@ public class PrimaryStorageDownloadAnswer extends Answer  {
     private long templateSize = 0L;
 
 	protected PrimaryStorageDownloadAnswer() {
+	    super();
 	}
 
     public PrimaryStorageDownloadAnswer(String detail) {

core/src/com/cloud/agent/api/storage/ResizeVolumeAnswer.java

@@ -22,7 +22,7 @@ public class ResizeVolumeAnswer extends Answer {
     private long newSize;
 
     protected ResizeVolumeAnswer() {
-
+        super();
     }
 
     public ResizeVolumeAnswer(ResizeVolumeCommand cmd, boolean result, String details, long newSize) {

core/src/com/cloud/agent/api/storage/UpgradeDiskAnswer.java

@@ -21,7 +21,9 @@ import com.cloud.agent.api.Command;
 
 public class UpgradeDiskAnswer extends Answer {
 
-    public UpgradeDiskAnswer() {}
+    public UpgradeDiskAnswer() {
+        super();
+    }
 
     public UpgradeDiskAnswer(Command cmd, boolean success, String details) {
         super(cmd, success, details);