src/lib/dhcpsrv/tests/generic_host_data_source_unittest.cc
    GenericHostDataSourceTest::compareClientClasses() - now uses
    std::equal()

    GenericHostDataSourceTest::testMultipleClientClasses4()
    GenericHostDataSourceTest::testMultipleClientClasses6() - added
    steps for each of the host getters defined in BaseHostDataSource

src/lib/dhcpsrv/tests/generic_host_data_source_unittest.h
src/lib/dhcpsrv/tests/mysql_host_data_source_unittest.cc
src/lib/dhcpsrv/tests/pgsql_host_data_source_unittest.cc - fixed typo