HPCC-26124 The external.ecl and externalplane.ecl uses same file names and may clashes in parallel query mode.

Add WUID to filenames in external.ecl and externalplane.ecl

Tested localy in paralle query mode.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>

testing/regress/ecl/external.ecl

@@ -9,7 +9,7 @@ ds := DATASET([{'a'}], rec);
 dropzonePath := File.GetDefaultDropZone() +'/' : STORED('dropzonePath');
 
 string getFName(string ext) := FUNCTION
- RETURN File.ExternalLogicalFileName('localhost', dropzonePath) + 'external' + ext;
+ RETURN File.ExternalLogicalFileName('localhost', dropzonePath)  + WORKUNIT + 'external' + ext;
 END;
 
 external1 := getFName('1');

testing/regress/ecl/externalplane.ecl

@@ -27,7 +27,7 @@ ds := DATASET([{'a'}], rec);
 dropzone := 'mydropzone' : STORED('dropzone');
 
 string getFName(string ext) := FUNCTION
- RETURN '~PLANE::' + dropzone + '::' + 'external' + ext;
+ RETURN '~PLANE::' + dropzone + '::'  + WORKUNIT + 'external' + ext;
 END;
 
 external1 := getFName('1');