EnableExternalDataSources by default true (#1408)

Author: nshestakov

ydb/core/protos/feature_flags.proto

@@ -101,7 +101,7 @@ message TFeatureFlags {
     optional bool EnableTopicServiceTx = 86 [default = false];
     optional bool EnableLLVMCache = 87 [default = false];
     optional bool EnableExternalDataSources = 88 [default = false];
-    optional bool EnableTopicDiskSubDomainQuota = 89 [default = false];
+    optional bool EnableTopicDiskSubDomainQuota = 89 [default = true];
     optional bool EnableSeparationComputeActorsFromRead = 90 [default = false];
     optional bool EnablePQConfigTransactionsAtSchemeShard = 91 [default = false];
     optional bool EnableScriptExecutionOperations = 92 [default = false];