Change helps display detailed output for all possible VNI MACs without
specifying VNI or mac. It helps in troubleshooting - a single
command can be fired to capture detailed info on all VNIs.
Also fixed and existing json related bug where json object is created by
a parent function and freed in child function.
Ticket: CM-22832 Signed-off-by: Nitin Soni <nsoni@cumulusnetworks.com> Reviewed-by: CCR-8028