Tests

Add cache fallback into DB library #1384

Job	Run time
Setup & Build Docker Image	2m 41s
Unit Test	52s
Adapter Tests (MariaDB)	3m 22s
Adapter Tests (MySQL)	3m 52s
Adapter Tests (Postgres)	2m 55s
Adapter Tests (SQLite)	2m 20s
Adapter Tests (MongoDB)	2m 1s
Adapter Tests (Mirror)	4m 27s
Adapter Tests (SharedTables/MariaDB)	3m 14s
Adapter Tests (SharedTables/MySQL)	4m 10s
Adapter Tests (SharedTables/Postgres)	2m 53s
Adapter Tests (SharedTables/SQLite)	1m 22s
Adapter Tests (SharedTables/MongoDB)	2m 0s
	36m 9s

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