Added equals and hashcode methods in Password API.

Signed-off-by: Maiero <matteo.maiero@eurotech.com>

kura/org.eclipse.kura.api/src/main/java/org/eclipse/kura/configuration/Password.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011, 2016 Eurotech and/or its affiliates
+ * Copyright (c) 2011, 2019 Eurotech and/or its affiliates
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -11,6 +11,8 @@
  *******************************************************************************/
 package org.eclipse.kura.configuration;
 
+import java.util.Arrays;
+
 import org.osgi.annotation.versioning.ProviderType;
 
 /**
@@ -19,26 +21,53 @@
 @ProviderType
 public class Password {
 
-    private char[] m_password;
+    private char[] value;
 
     public Password(String password) {
         super();
         if (password != null) {
-            this.m_password = password.toCharArray();
+            this.value = password.toCharArray();
         }
     }
 
     public Password(char[] password) {
         super();
-        this.m_password = password;
+        this.value = password;
     }
 
     public char[] getPassword() {
-        return this.m_password;
+        return this.value;
     }
 
     @Override
     public String toString() {
-        return new String(this.m_password);
+        return new String(this.value);
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + Arrays.hashCode(this.value);
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        Password other = (Password) obj;
+        if (!Arrays.equals(this.value, other.value)) {
+            return false;
+        }
+        return true;
     }
+
 }