Tests

Get schema attributes #1288

Job	Run time
Setup & Build Docker Image	2m 35s
Unit Test	59s
Adapter Tests (MariaDB)	2m 11s
Adapter Tests (MySQL)	2m 47s
Adapter Tests (Postgres)	2m 0s
Adapter Tests (SQLite)	1m 24s
Adapter Tests (MongoDB)	1m 7s
Adapter Tests (Mirror)	3m 19s
Adapter Tests (SharedTables/MariaDB)	2m 23s
Adapter Tests (SharedTables/MySQL)	2m 40s
Adapter Tests (SharedTables/Postgres)	1m 54s
Adapter Tests (SharedTables/SQLite)	1m 23s
Adapter Tests (SharedTables/MongoDB)	1m 14s
	25m 56s

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