Stephane Nicoll b67903a04a Keep "testdb" default datasource name internal
Previously, Hikari's pool name was auto-configured with the value of
`spring.datasource.name` that defaults  to `testdb`, which brings some
confusion.

This commit removes the default `testdb` value on
`spring.datasource.name` as it is a sane default only for an embedded
datasource. It is applied whenever applicable instead.

Closes gh-11719
2018-01-24 17:41:32 -08:00
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