[migration] mark all version prior 3.7 as non-migrable
API possible used by such old migration script are not supported in recent
Cubiweb.
Closes #2772958
option_group_changed('port', 'main', 'web')
option_group_changed('query-log-file', 'main', 'web')
option_group_changed('profile', 'main', 'web')
option_group_changed('max-post-length', 'main', 'web')