Reformat coe::ovs block comments

Per review notes in:
https://github.com/CiscoSystems/grizzly-manifests/pull/185

This commit removes comments above coe::ovs code blocks
other than the first one in the file.  It also reformats
the comments slightly for readability.

Partial-Bug: #1208979
Merge pull request #1 from markvoelker/bug1208979

Reformat coe::ovs block comments