Cherry-pick #17378 to 7.x: [Metricbeat] Add a switch to the driver definition on SQL module to use pretty names

CHANGELOG.next.asciidoc

@@ -201,6 +201,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fix "ID" event generator of Google Cloud module {issue}17160[17160] {pull}17608[17608]
 - Add privileged option for Auditbeat in Openshift {pull}17637[17637]
 - Fix storage metricset to allow config without region/zone. {issue}17623[17623] {pull}17624[17624]
+- Add a switch to the driver definition on SQL module to use pretty names {pull}17378[17378]
 
 *Packetbeat*
 

x-pack/metricbeat/module/sql/query/query.go

@@ -102,7 +102,7 @@ func (m *MetricSet) Fetch(ctx context.Context, report mb.ReporterV2) error {
 // DB gets a client ready to query the database
 func (m *MetricSet) DB() (*sqlx.DB, error) {
 	if m.db == nil {
-		db, err := sqlx.Open(m.Driver, m.HostData().URI)
+		db, err := sqlx.Open(switchDriverName(m.Driver), m.HostData().URI)
 		if err != nil {
 			return nil, errors.Wrap(err, "opening connection")
 		}
@@ -251,3 +251,13 @@ func (m *MetricSet) Close() error {
 	}
 	return errors.Wrap(m.db.Close(), "closing connection")
 }
+
+// switchDriverName switches between driver name and a pretty name for a driver. For example, 'oracle' driver is called
+// 'godror' so this detail implementation must be hidden to the user, that should only choose and see 'oracle' as driver
+func switchDriverName(d string) string {
+	if d == "oracle" {
+		return "godror"
+	}
+
+	return d
+}