Logging: Allow deferred formatting for trace and spanId#3661

Merged

chingor13 merged 5 commits intogoogleapis:masterfrom

bogdandrutu:defer

Nov 29, 2018

Commits on Sep 10, 2018

Allow deferred formating for trace and spanId.
bogdandrutu
committed

Commits on Nov 7, 2018

Commits on Nov 28, 2018