Duplicate check for AIDE in RHEL7 Stig playbook

[apteryks]

Description of problem:

The AIDE installation check occurs twice. See https://github.com/RedHatOfficial/ansible-role-rhel7-stig/blob/master/tasks/main.yml#L384 and https://github.com/RedHatOfficial/ansible-role-rhel7-stig/blob/master/tasks/main.yml#L408. The former one is not associated with the DISA-STIG-RHEL-07-020030 tag, which makes it harder to skip.