PLT-6076 Adding viper libs for config file changes (#5871)

* Adding viper libs for config file changes

* Removing the old fsnotify lib

* updating some missing libs

vendor/github.com/miekg/dns/README.md

@@ -57,6 +57,7 @@ A not-so-up-to-date-list-that-may-be-actually-current:
 * https://github.com/fffaraz/microdns
 * http://quilt.io
 * https://github.com/ipdcode/hades (JD.COM)
+* https://github.com/StackExchange/dnscontrol/
 
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