Enhance wls_datasource type to enable gridlink

Added FAN Enabled parameter and ONS Nodes parameter to wls_datasource
type.
Revert "Enhance wls_datasource type to enable gridlink"

This reverts commit 66e5a3cc4861402bf69a9f91b53e2345a157df6b.
wls_datasource enhancement, fix

Added FAN Enabled and ONS Node List parameters to wls_datasource to
allow for Gridlink datasources to be configured.

Fixed a bug where an extraproperties key/value was not removed from
Weblogic by modify action.