Provisioning: Support FolderUid in Dashboard Provisioning Config (#16559)

* add folderUid to DashbaordsAsConfig structs and DashbardProviderConfigs struct, set these values in mapping func
look for new folderUid values in config_reader tests
set dashboard folder Uid explicitly in file_reader, which has no affect when not given

* formatting and docstrings

* add folderUid to DashbaordsAsConfig structs and DashbardProviderConfigs struct, set these values in mapping func
look for new folderUid values in config_reader tests
set dashboard folder Uid explicitly in file_reader, which has no affect when not given

* formatting and docstrings

* add folderUid option, as well as documentation for the rest of the fields

* add blank folderUid in devenv example.

* add folderUid to provisioning sample yaml

* instead of just warning, return error if unmarshalling dashboard provisioning file fails

* Removing the error handling and adding comment

* Add duplicity check for folder Uids


Co-authored-by: swtch1 <joshua.thornton@protonmail.com>

pkg/services/provisioning/dashboards/config_reader_test.go

@@ -66,6 +66,7 @@ func validateDashboardAsConfig(t *testing.T, cfg []*DashboardsAsConfig) {
 	So(ds.Type, ShouldEqual, "file")
 	So(ds.OrgId, ShouldEqual, 2)
 	So(ds.Folder, ShouldEqual, "developers")
+	So(ds.FolderUid, ShouldEqual, "xyz")
 	So(ds.Editable, ShouldBeTrue)
 	So(len(ds.Options), ShouldEqual, 1)
 	So(ds.Options["path"], ShouldEqual, "/var/lib/grafana/dashboards")
@@ -77,6 +78,7 @@ func validateDashboardAsConfig(t *testing.T, cfg []*DashboardsAsConfig) {
 	So(ds2.Type, ShouldEqual, "file")
 	So(ds2.OrgId, ShouldEqual, 1)
 	So(ds2.Folder, ShouldEqual, "")
+	So(ds2.FolderUid, ShouldEqual, "")
 	So(ds2.Editable, ShouldBeFalse)
 	So(len(ds2.Options), ShouldEqual, 1)
 	So(ds2.Options["path"], ShouldEqual, "/var/lib/grafana/dashboards")