Add Mariam John to Test and Releaes Maintainers (#440)
Add Mariam John to Test and Releaes Maintainers (#440)

* Add Mariam John to Test and Releaes Maintainers

@fpesce @ericvn @johnma14 

Add Mariam John as a maintainer for the Test and Release workgroup.

* Update teams.yaml
istio/community,istio/community,istio/community