Metric should read from master when constructing INSERT statements.
Merge branch 'release/2.1' into release/2.2

Conflicts:
	db/src/main/java/com/psddev/dari/db/MetricAccess.java
Merge branch 'release/2.2' into release/2.3

Conflicts:
	db/src/main/java/com/psddev/dari/db/MetricAccess.java