Disable auto merge in master and release-1.0, and add release 1.0 test config (#919)
Disable auto merge in master and release-1.0, and add release 1.0 test config (#919)

* prepare for 1.0.0

* prepare for 1.0, fix as per code review

* Update config.yaml

Disable auto merge in master

istio/test-infra,istio/test-infra,istio/test-infra,istio/test-infra