* gandi/livedns: Print actual changes to be pushed
Currently, preview & push output prints all domain records values:
$ dnscontrol preview
----- DNS Provider: gandi...1 correction
#1: Setting dns records for example.com:
mail.example.com.
1.2.3.4
"ga"
"bu"
"zo"
With this change, it would only show what changes from current state:
$ dnscontrol preview
----- DNS Provider: gandi...1 correction
#1: Setting dns records for example.com:
CREATE TXT ga.example.com "ga" ttl=10800
MODIFY TXT bu.example.com "bu" ttl=10800
DELETE TXT meu.example.com "meu" ttl=10800
* Add import
This:
* adds a global -v flag for verbosity
* refactors the "printer" package to have a DefaultPrinter and package
functions that call it, similar to net/http's DefaultServeMux
* adds printer tests
* moves current users of Debugf to Printf
* moves most users of the "log" package to use "printer"
* demotes noticably noisy log messages to "Debugf", like "IGNORE"-
and "NO_PURGE"-related messages
* Add gandi LiveDNS api provider
* vendor testify and gandi live DNS
* govendor update github.com/prasmussen/gandi-api/{client,live_dns}
* Fix Gandi-livedns TXT unit test
* TravisCI should use go 1.10
