Tests

Fix HA tests #748

Job	Run time
Check libraries	31s
Unit tests	2m 35s
Lint	16s
Build charms / Get workflow version / Get workflow version	10s
Build charms / Collect charms	19s
Build charms / Build mongodb charm \| 22.04	2m 44s
Build charms / Build application charm \| 20.04	1m 42s
charm-integration	12m 18s
ha-integration	50m 56s
relation-integration	21m 12s
legacy-integration	3m 28s
tls-integration	26m 35s
backup-integration	1h 7m 52s
metric-integration	18m 54s
	3h 29m 32s

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