Revert "we need berkeley db for removing netatalk..."

This reverts commit f91a8d497ca867e5157369b83a02fa34ed578e93.
Revert "remove all the unnecessary echo command"

This reverts commit 75fc3dd739cb1dc25c2c47168095f0aab10946bc.
Revert "let's use the managed version of netatalk when using precise"

This reverts commit 3b85be5d9e8c2fa2e76c598ce57381255d994f03.