tests/input/logictree_test:
tests/input/logictree_test:

Added a characteristic source to the `test_source_type` test case.


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Former-commit-id: 4ff2abc26c662670534cba33f7def2ce885f0165
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine