C++: Make dataflow configuration modules private in qll files

Author: jketema

cpp/ql/src/Likely Bugs/Memory Management/NtohlArrayNoBound.qll

@@ -147,7 +147,7 @@ deprecated class NetworkToBufferSizeConfiguration extends DataFlow::Configuratio
   }
 }
 
-module NetworkToBufferSizeConfiguration implements DataFlow::ConfigSig {
+private module NetworkToBufferSizeConfiguration implements DataFlow::ConfigSig {
   predicate isSource(DataFlow::Node node) { node.asExpr() instanceof NetworkFunctionCall }
 
   predicate isSink(DataFlow::Node node) { node.asExpr() = any(BufferAccess ba).getAccessedLength() }

cpp/ql/src/Security/CWE/CWE-020/ExternalAPIsSpecific.qll

@@ -62,7 +62,7 @@ deprecated class UntrustedDataToExternalApiConfig extends TaintTracking::Configu
 deprecated class UntrustedDataToExternalAPIConfig = UntrustedDataToExternalApiConfig;
 
 /** A configuration for tracking flow from `RemoteFlowSource`s to `ExternalApiDataNode`s. */
-module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
+private module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
   predicate isSource(DataFlow::Node source) {
     exists(RemoteFlowSourceFunction remoteFlow |
       remoteFlow = source.asExpr().(Call).getTarget() and

cpp/ql/src/Security/CWE/CWE-020/ir/ExternalAPIsSpecific.qll

@@ -57,7 +57,7 @@ deprecated class UntrustedDataToExternalApiConfig extends TaintTracking::Configu
 deprecated class UntrustedDataToExternalAPIConfig = UntrustedDataToExternalApiConfig;
 
 /** A configuration for tracking flow from `RemoteFlowSource`s to `ExternalApiDataNode`s. */
-module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
+private module UntrustedDataToExternalApiConfig implements DataFlow::ConfigSig {
   predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
 
   predicate isSink(DataFlow::Node sink) { sink instanceof ExternalApiDataNode }