KRB5/GSSAPI Authentication support

Hi,

KRB5/GSSAPI authentication was added in Teiid Runtime 7.6 (see [1]) and this seems to work for both the JDBC and postgresql emulation layer.

The problem is if you have a teiid instance secured by KRB5/GSSAPI and you wish to use the designer against it, you currently can't. This is because the "add teiid connection" screen takes a bunch of input and hand crafts the driver URL, which means you are unabled to add the extra jdbc url options needed such as

authenticationType=KRB5;jaasName=Client;kerberosServicePrincipleName=demo@EXAMPLE.COM

The add connection screen should be changed to either have a tick box to say "use gssapi authentication" and then allow you to specify the jaasName and kerberosServicePrincipalName, or it should have some way for you to add "custom jdbc url options" (or just allow you to manually craft the jdbc url).

Regards,

Graeme

[1] https://issues.jboss.org/browse/TEIID-1610