Permission problem with PosgreSQL read only unit test.
PgSqlHostDataSourceTest.testReadOnlyDatabase failed on at least two different recent Linuxes with a permission problem on
SELECT version, minor FROM schema_version;. It seems it can be fixes passing the
GRANT SELECT ON ALL TABLES IN SCHEMA public TO keatest_readonly; command.
Perhaps the documentation (
doc/devel/unit-tests.dox) should be updated?