ccl/sqlproxyccl: add connection migration-related metrics#77700

Merged

craig[bot] merged 2 commits intocockroachdb:masterfrom jaylim-crl:jay/sqlproxy-add-transfer-latency

Mar 14, 2022

+129-37

Commits on Mar 14, 2022

ccl/sqlproxyccl: add metric that measures connection migration latency
jaylim-crl
committed
ccl/sqlproxyccl: add metric that records the transfer response message size
jaylim-crl
committed