engine: Refactor network hibernate daos

The patch performs the following:
1. Standardize daos and tests names.
2. Move hibernate and network daos into package.
3. Delete from properties file unimplemented hibernate dao.

Signed-off-by: Moti Asayag <masayag@redhat.com>
Change-Id: Idbd272df9965def23efe6f5e1f19f74d2c94150d