Set keystore type to JKS, so it's always the same.

Without setting it explicitly it depends on the JDK version used.

Signed-off-by: Arjan Tijms <arjan.tijms@gmail.com>

nucleus/admin/server-mgmt/src/main/java/com/sun/enterprise/admin/servermgmt/KeystoreManager.java

@@ -193,6 +193,7 @@ private void addSelfSignedCertToKeyStore(final File keystore, final String alias
                 "-validity", "3650",
                 "-keypass", masterPassword,
                 "-storepass", masterPassword,
+                "-storetype", "JKS",
                 SKID_EXTENSION_SYSTEM_PROPERTY };
 
         new KeytoolExecutor(keytoolCmd, 60).execute("keystoreNotCreated", keystore);