Tests

Introduce maintenance mode #1637

Job	Run time
Build microceph snap	6m 59s
Run Unit tests	3m 3s
Single node with encryption	6m 43s
Multi node testing with custom microceph IP	6m 36s
Test MicroCeph Cluster features.	3m 24s
Test with loopback file OSDs	3m 47s
Multi node testing	7m 27s
Test MicroCeph Remote Replication features.	7m 11s
Test maintenance mode	11m 45s
Test quincy upgrades	5m 56s
Test reef upgrades	7m 55s
Test WAL/DB device usage	2m 36s
	1h 13m 22s

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