Make Integration tests react to environment variables and system properties [DATAJDBC-461]

[spring-projects-issues]

Jens Schauder opened DATAJDBC-461 and commented

DatabaseProfileValueSource which is used to ignore certain tests with certain databases uses the spring.profiles.active system property, which is also used by the maven build configuration to control the tests.

But Spring also supports usage of environment variables for controlling profiles, so this class should too

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Referenced from: commits a48b667, e988e59