TemplatereplacerCalculation: Change exit codes to be in 300 range

The exit codes where specified in the 100 range, which is reserved (by
convention) for exit codes defined by the `CalcJob` class. In fact, some
of them even overlapped with existing exit codes defined by `CalcJob`.
There currently is no logic in `aiida-core` that will prevent or at
least warn when existing exit codes get overwritten so this went
unnoticed until now.

Since the plugin is mostly used for internal testing purposes, there
will not be an automated database migration to update existing exit
codes.

aiida/calculations/templatereplacer.py

@@ -76,31 +76,31 @@ def define(cls, spec):
         spec.default_output_node = 'output_parameters'
 
         spec.exit_code(
-            101,
+            301,
             'ERROR_NO_TEMPORARY_RETRIEVED_FOLDER',
             invalidates_cache=True,
             message='The temporary retrieved folder data node could not be accessed.'
         )
         spec.exit_code(
-            105,
+            305,
             'ERROR_NO_OUTPUT_FILE_NAME_DEFINED',
             invalidates_cache=True,
             message='The `template` input node did not specify the key `output_file_name`.'
         )
         spec.exit_code(
-            110,
+            310,
             'ERROR_READING_OUTPUT_FILE',
             invalidates_cache=True,
             message='The output file could not be read from the retrieved folder.'
         )
         spec.exit_code(
-            111,
+            311,
             'ERROR_READING_TEMPORARY_RETRIEVED_FILE',
             invalidates_cache=True,
             message='A temporary retrieved file could not be read from the temporary retrieved folder.'
         )
         spec.exit_code(
-            120, 'ERROR_INVALID_OUTPUT', invalidates_cache=True, message='The output file contains invalid output.'
+            320, 'ERROR_INVALID_OUTPUT', invalidates_cache=True, message='The output file contains invalid output.'
         )
 
     def prepare_for_submission(self, folder):