Tests

[DPE-2777] Basic sharding int test #915

Job	Run time
Lint	15s
Unit tests	2m 38s
Check libraries	35s
Build charms / Get workflow version / Get workflow version	6s
Build charms / Collect charms	14s
Build charms / Build mongodb charm \| 22.04	2m 55s
Build charms / Build application charm \| 20.04	1m 51s
charm-integration	12m 11s
ha-integration	54m 48s
relation-integration	25m 35s
legacy-integration	5m 4s
tls-integration	28m 24s
backup-integration	1h 1m 40s
metric-integration	19m 29s
	3h 35m 45s

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