tpl/fmt: Add erroridf template func

Fixes #8613

common/loggers/ignorableLogger.go

@@ -22,6 +22,7 @@ import (
 type IgnorableLogger interface {
 	Logger
 	Errorsf(statementID, format string, v ...interface{})
+	Apply(logger Logger) IgnorableLogger
 }
 
 type ignorableLogger struct {
@@ -55,3 +56,10 @@ ignoreErrors = [%q]`, statementID)
 
 	l.Errorf(format, v...)
 }
+
+func (l ignorableLogger) Apply(logger Logger) IgnorableLogger {
+	return ignorableLogger{
+		Logger:     logger,
+		statements: l.statements,
+	}
+}

common/loggers/loggers.go

@@ -59,6 +59,8 @@ type Logger interface {
 	Println(v ...interface{})
 	PrintTimerIfDelayed(start time.Time, name string)
 	Debug() *log.Logger
+	Debugf(format string, v ...interface{})
+	Debugln(v ...interface{})
 	Info() *log.Logger
 	Infof(format string, v ...interface{})
 	Infoln(v ...interface{})
@@ -108,6 +110,14 @@ func (l *logger) Debug() *log.Logger {
 	return l.DEBUG
 }
 
+func (l *logger) Debugf(format string, v ...interface{}) {
+	l.DEBUG.Printf(format, v...)
+}
+
+func (l *logger) Debugln(v ...interface{}) {
+	l.DEBUG.Println(v...)
+}
+
 func (l *logger) Infof(format string, v ...interface{}) {
 	l.INFO.Printf(format, v...)
 }