Drop go 1.14 support

Author: Felixoid

.github/workflows/tests.yml

@@ -14,9 +14,9 @@ jobs:
     strategy:
       matrix:
         go:
-          - ^1.14
           - ^1.15
           - ^1.16
+          - ^1.17
           - ^1
     steps:
 

README.md

@@ -20,7 +20,7 @@ Gray components are optional or alternative
 - [x] [carbonzipper](https://github.com/go-graphite/carbonzipper) (DEPRECATED, is part of carbonapi currently)
 
 ## Build
-Required golang 1.13+
+Required golang 1.15+
 ```sh
 # build binary
 git clone https://github.com/lomik/graphite-clickhouse.git

helper/clickhouse/external-data.go

@@ -132,11 +132,7 @@ func (e *ExternalData) debugDump(ctx context.Context, u url.URL) {
 	q["query_id"] = []string{fmt.Sprintf("%v:debug", requestID)}
 	u.RawQuery = q.Encode()
 
-	// TODO: replace with u.Redacted() after support of 1.14 is dropped
-	if _, has := u.User.Password(); has {
-		u.User = url.UserPassword(u.User.Username(), "xxxxx")
-	}
-	command += "'" + u.String() + "'"
+	command += "'" + u.Redacted() + "'"
 
 	logger.Info("external-data", zap.String("debug command", command))
 }