Modify "/opt/onap/sdnc/bin/startODL.sh" to
Append to bootfeatures "sdnr-wt-feature-aggregator" if SDNRWT is "true".
Provide enum variables to control the SDNC in environments and configure SDNR.

• SDNRWT => enabe SDNR feature
• SDNRWT_BOOTFEATURES => Modify SDNR boot feature list
• SDNRWT_REPOSITORY => Add further repository for SDNR