minimizer: Whitelist simplevars.aug lense

Is needed by the sysctl.aug lense.

Change-Id: I19a9470be68a89956e0e84077677944041a0dad9
Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>
tests: Add check_augeas

This testcase checks the correctness of all augeas lenses.

Change-Id: I308579bbefa50a56853b0534da23bae62640ded5
Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>