Implemented the cancellation of discovery request#2076

Merged

cltshivash merged 4 commits intomicrosoft:masterfrom cltshivash:master

Jul 9, 2019

+420-125

Commits on Jun 27, 2019

Implemented the cancellation of discovery request
cltshivash
committed

Commits on Jul 8, 2019

Added an end to end tests to cover the discovery cancellation scenario
cltshivash
committed

Commits on Jul 9, 2019