Tests

[DPE-3293] mongos charm supports external connections via data-integrator charm #85

Job	Run time
Lint	18s
Check libraries	31s
Unit test charm	23s
Build charms / Get workflow version / Get workflow version	7s
Build charms / Collect charms	9s
Build charms / Build mongos charm \| base #0	1m 42s
Build charms / Build application charm \| base #0	1m 26s
Integration test charm / 3.1.6 \| Collect integration test groups	25s
Integration test charm / Get workflow version / Get workflow version	3s
Integration test charm / external_relations/test_charm.py \| group 1	9m 44s
Integration test charm / test_charm.py \| group 1	17m 38s
	32m 26s

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