Code-review markups.
Code-review markups.


Former-commit-id: 4ef79727a476fc5490a6d825652ed108942458b9
caseydavenport/libcalico,tomdee/libcalico,projectcalico/libnetwork-plugin,tomdee/libnetwork-plugin,insequent/libcalico,L-MA/libcalico,TrimBiggs/libcalico,djosborne/libcalico,TrimBiggs/libnetwork-plugin,Symmetric/libcalico,projectcalico/libcalico,TrimBiggs/libnetwork-plugin,robbrockbank/libcalico,alexhersh/libcalico,plwhite/libcalico