CHANGELOG, cli-reference: update for generate openapi cmd#1041

Merged

estroz merged 3 commits intooperator-framework:masterfrom

estroz:changelog

Feb 5, 2019

Commits on Jan 31, 2019

CHANGELOG.md: add notes on 'generate openapi' and 'add api' updates
Eric Stroczynski
committed
doc/sdk-cli-reference.md: add 'generate openapi' command ref and update 'generate k8s' and 'add api' refs
Eric Stroczynski
committed

Commits on Feb 1, 2019

updates as per comments
Eric Stroczynski
committed