Add tmc folder to python's packaging configuration

Author: Redande

tmc-langs-python3/src/main/java/fi/helsinki/cs/tmc/langs/python3/Python3Plugin.java

@@ -6,6 +6,7 @@
 import fi.helsinki.cs.tmc.langs.abstraction.ValidationResult;
 import fi.helsinki.cs.tmc.langs.domain.ExerciseBuilder;
 import fi.helsinki.cs.tmc.langs.domain.ExerciseDesc;
+import fi.helsinki.cs.tmc.langs.domain.ExercisePackagingConfiguration;
 import fi.helsinki.cs.tmc.langs.domain.RunResult;
 import fi.helsinki.cs.tmc.langs.domain.TestDesc;
 import fi.helsinki.cs.tmc.langs.io.StudentFilePolicy;
@@ -146,4 +147,10 @@ private String[] getTestCommand() {
     public void clean(Path path) {
         // no op
     }
+
+    @Override
+    public ExercisePackagingConfiguration getExercisePackagingConfiguration() {
+        return new ExercisePackagingConfiguration(
+                ImmutableList.of("src"), ImmutableList.of("test", "tmc"));
+    }
 }