tree a4e76a40c7ac549e00f55a85f24d2eb4992acf7a
parent 3a6acb8c256cdd0111f5f412c7459de6d3909265
author liyuqian <liyuqian@google.com> 1557423454 -0700
committer GitHub <noreply@github.com> 1557423454 -0700
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Add master channel to performance issue template (#32345)

I helped the daily mail debug a performance issue on I/O yesterday. Not
using the master branch could be wasting a lot of time due to old bugs.