Tests

[DPE-1697] Merge test apps #910

Job	Run time
Check libraries	23s
Unit tests	36s
Lint	18s
Build charms / Get workflow version / Get workflow version	3s
Build charms / Collect charms	14s
Build charms / Build pgbouncer charm \| 20.04	5m 24s
Build charms / Build pgbouncer charm \| 22.04	5m 23s
standalone-integration \| 2.9.44	9m 33s
standalone-integration \| 3.1.5	12m 39s
backend-integration \| 2.9.44	35m 50s
backend-integration \| 3.1.5	26m 32s
client-relation-integration \| 2.9.44	41m 36s
client-relation-integration \| 3.1.5	39m 45s
legacy-client-relation-integration \| 2.9.44	28m 59s
legacy-client-relation-integration \| 3.1.5	25m 29s
legacy-client-relation-integration-admin \| 2.9.44	15m 10s
legacy-client-relation-integration-admin \| 3.1.5	1s
scaling-integration \| 2.9.44	1s
scaling-integration \| 3.1.5	1s
	4h 7m 57s

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