Oncall report from Jun 6th to Jun 12th

[lhestz]

Hi, all:
During the last week, 3 issues were closed and 2 PRs were merged:
- https://github.com/apache/incubator-brpc/pull/1784
- https://github.com/apache/incubator-brpc/pull/1786
- https://github.com/apache/incubator-brpc/pull/1790


Regards,
lei he