Tests

Fix HA tests #745

Job	Run time
Lint	19s
Unit tests	2m 35s
Check libraries	35s
Build charms / Get workflow version / Get workflow version	4s
Build charms / Collect charms	13s
Build charms / Build mongodb charm \| 22.04	2m 43s
Build charms / Build application charm \| 20.04	1m 49s
charm-integration	14m 44s
ha-integration	1h 6m 34s
relation-integration	25m 7s
legacy-integration	4m 11s
tls-integration	26m 49s
backup-integration	55m 23s
metric-integration	20m 26s
	3h 41m 32s

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