MAR-58: Updated roles, LDAP modules, and test site to be compatible with Ansible 2.0.x and 2.1.x. Switched from using sudo/sudo_user to become/become_user. Fixed referencing of variables within roles, mainly for with_items/with_dicts calls. Improved handling of options in ldap_entry module to avoid deprecation of passing dict-like arguments to ldap_entry module. Minor fix to ldap_permissions module.