Fix filter config as an object

* Add use exisiting to DR feed
* Add resource configuration
* Add support for filter config as escaped JSON string

Issue-ID: DCAEGEN2-1826
Change-Id: Ie4fe45e0443af8eb4d859e66609aa6cbffd0e920
Signed-off-by: JoeOLeary <joseph.o.leary@est.tech>
7 files changed