CloudWatch: Move logger to its own package and minor refactoring (#57107)

* Move log to its own package

* Rename test-data to testdata

* Change alias to string type

* Remove parseQueries from a method of cloudWatchExecutor

pkg/tsdb/cloudwatch/cloudwatch.go

@@ -27,9 +27,9 @@ import (
 	"github.com/grafana/grafana-plugin-sdk-go/backend/resource/httpadapter"
 	"github.com/grafana/grafana-plugin-sdk-go/data"
 	"github.com/grafana/grafana/pkg/infra/httpclient"
-	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tsdb/cloudwatch/cwlog"
 )
 
 type datasourceInfo struct {
@@ -81,11 +81,10 @@ const (
 	timeSeriesQuery = "timeSeriesQuery"
 )
 
-var plog = log.New("tsdb.cloudwatch")
 var aliasFormat = regexp.MustCompile(`\{\{\s*(.+?)\s*\}\}`)
 
 func ProvideService(cfg *setting.Cfg, httpClientProvider httpclient.Provider, features featuremgmt.FeatureToggles) *CloudWatchService {
-	plog.Debug("initing")
+	cwlog.Debug("initing")
 
 	executor := newExecutor(datasource.NewInstanceManager(NewInstanceSettings(httpClientProvider)), cfg, awsds.NewSessionCache(), features)
 
@@ -160,9 +159,9 @@ func NewInstanceSettings(httpClientProvider httpclient.Provider) datasource.Inst
 			at = awsds.AuthTypeEC2IAMRole
 		case "arn":
 			at = awsds.AuthTypeDefault
-			plog.Warn("Authentication type \"arn\" is deprecated, falling back to default")
+			cwlog.Warn("Authentication type \"arn\" is deprecated, falling back to default")
 		default:
-			plog.Warn("Unrecognized AWS authentication type", "type", jsonData.AuthType)
+			cwlog.Warn("Unrecognized AWS authentication type", "type", jsonData.AuthType)
 		}
 
 		model.authType = at