Add Kerberos byte[] support to AS400JDBCDriver

[Chaitanya0114]

#330 Got merged and this PR adds Kerberos byte[] support to AS400JDBCDriver

[Chaitanya0114]

Hi @jeber-ibm , Can you please verify the changes. I've changed "setKerbTicket(byte[])" method in "AS400" public so it can be used by external components.
Also added new APIs in "AS400JDBCDriver": "connect(AS400, byte[])" and "connect(AS400, byte[], boolean)" to accept a Kerberos ticket and pass it via "setKerbTicket()" before invoking "initializeConnection()".

[jeber-ibm]

Please add additional methods as indicated in the review.

[jeber-ibm]

The AS400 object should already have had the kerberos ticket set on the AS400 object. But if you think these methods are needed, then they can be kept.

I would like to see the following methods added to the AS400JDBCDriver class.

public java.sql.Connection connect (String url, byte[] kerberosTicket)

public java.sql.Connection connect (String url, Properties info, byte[] kerberosTicket)

You will also need methods to set the ticket on the AS400JDBCDataSource and AS400JDBCManagedDataSource classes.

[jeber-ibm]

You need to add some Javadoc for the setKerbTicket method.

[jeber-ibm]

You need to add some Javadoc for this new method.

[jeber-ibm]

Javadoc needed for the new public method.

[jeber-ibm]

You need to make a protected copy of the kerberosTicket_ (look how the password is protected). You also need to use the kerboseTicket_ to make a connection (instead of using a password to make a connection).

[Chaitanya0114]

Hi @jeber-ibm , Can you please check on my new changes.