Update all 0 and null Threshold values in Metric_Definitions

[volkcj]

Update them all to 0.008.

[philipbaileynar]

Performed on version 47 of DB by Philip on 16 Oct 2017. Will be shipped in next DB version.

UPDATE Metric_Definitions SET Threshold = 0.008 WHERE (IsActive <> 0) AND (XPath IS NOT NULL) AND ((Threshold IS NULL) OR (Threshold = 0))