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

@@ -12,6 +12,8 @@
  ******************************************************************************/
 package org.eclipse.kura.configuration;
 
+import java.util.Arrays;
+
 import org.osgi.annotation.versioning.ProviderType;
 
 /**
@@ -42,4 +44,31 @@ public char[] getPassword() {
     public String toString() {
         return new String(this.passwordVal);
     }
+
+    @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;
+    }
+
 }