[PUBAPI-701] Log every authentication error
[PUBAPI-701] Log every authentication error

joyent/sdc-cloudapi,arekinath/sdc-cloudapi,arekinath/sdc-cloudapi,KrisShannon/sdc-cloudapi,KrisShannon/sdc-cloudapi,joyent/sdc-cloudapi,misterbisson/sdc-cloudapi,misterbisson/sdc-cloudapi