ca: more informational error messages and debug logs#1912

Merged

LK4D4 merged 2 commits into

moby:masterfrom

cyli:ca-more-friendly-error-messages

Feb 2, 2017

Commits on Jan 31, 2017

Do slightly more validation of the join token when downloading the root certificate so
cyli
committed

Commits on Feb 1, 2017

Include timestamp information when validating a TLS certificate fails with an expiry error.
cyli
committed