Tests

Tests #845

Job	Run time
Check libraries	30s
Lint	18s
Unit tests	2m 32s
Build charms / Get workflow version / Get workflow version	2s
Build charms / Collect charms	16s
Build charms / Build mongodb charm \| 22.04	4m 2s
Build charms / Build application charm \| 20.04	2m 49s
charm-integration	12m 44s
ha-integration	2h 0m 17s
relation-integration	20m 4s
legacy-integration	8m 43s
tls-integration	24m 2s
backup-integration	37m 11s
metric-integration	19m 3s
	4h 12m 33s

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