Load index pattern before dashboards during setup (#14237)

During setup, if dashboards import fails (or maybe dashboards folder is
not present, like in development mode) we will not push the
index pattern.

This change makes sure we deploy the index pattern first, then proceed
with dashboards.

libbeat/dashboards/importer.go

@@ -298,18 +298,18 @@ func (imp Importer) ImportKibanaDir(dir string) error {
 
 	versionPath := "7"
 
+	// Loads the internal index pattern
+	if imp.fields != nil {
+		imp.loader.ImportIndex(imp.fields)
+	}
+
 	dir = path.Join(dir, versionPath)
 
 	imp.loader.statusMsg("Importing directory %v", dir)
 
 	if _, err := os.Stat(dir); err != nil {
 		return newErrNotFound("No directory %s", dir)
 	}
-
-	// Loads the internal index pattern
-	if imp.fields != nil {
-		imp.loader.ImportIndex(imp.fields)
-	}
 	check := []string{}
 	if !imp.cfg.OnlyDashboards {
 		check = append(check, "index-pattern")