Upgrage go-sql-driver/mysql to v1.7.1

Author: Yves Trudeau

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/cyberdelia/go-metrics-graphite v0.0.0-20161219230853-39f87cc3b432
 	github.com/fatih/color v1.10.0 // indirect
 	github.com/go-martini/martini v0.0.0-20170121215854-22fa46961aab
-	github.com/go-sql-driver/mysql v1.6.0
+	github.com/go-sql-driver/mysql v1.7.1
 	github.com/google/btree v1.0.0 // indirect
 	github.com/hashicorp/consul/api v1.7.0
 	github.com/hashicorp/go-cleanhttp v0.5.2-0.20190406162018-d3fcbee8e181 // indirect

vendor/modules.txt

@@ -18,7 +18,7 @@ github.com/fatih/color
 # github.com/go-martini/martini v0.0.0-20170121215854-22fa46961aab
 ## explicit
 github.com/go-martini/martini
-# github.com/go-sql-driver/mysql v1.6.0
+# github.com/go-sql-driver/mysql v1.7.1
 ## explicit
 github.com/go-sql-driver/mysql
 # github.com/google/btree v1.0.0