fix bare variables usage for loops

[fitz123]

Opened issue: #78

TASK [ansible-os-hardening : delete rhosts-files from system | DTAG SEC Req 3.21-4] ***
[DEPRECATION WARNING]: Using bare variables is deprecated. Update your playbooks so that the environment value uses the full
variable syntax ('{{users.stdout_lines}}').
This feature will be removed in a future release. Deprecation warnings can be
disabled by setting deprecation_warnings=False in ansible.cfg.

TASK [ansible-os-hardening : Change various sysctl-settings on rhel-hosts, look at the sysctl-vars file for documentation] ***
[DEPRECATION WARNING]: Using bare variables is deprecated. Update your playbooks so that the environment value uses the full
variable syntax ('{{sysctl_rhel_config}}').
This feature will be removed in a future release. Deprecation warnings can be
disabled by setting deprecation_warnings=False in ansible.cfg.

TASK [ansible-os-hardening : Change various sysctl-settings, look at the sysctl-vars file for documentation] ***
[DEPRECATION WARNING]: Using bare variables is deprecated. Update your playbooks so that the environment value uses the full
variable syntax ('{{sysctl_config}}').
This feature will be removed in a future release. Deprecation warnings can be disabled by
setting deprecation_warnings=False in ansible.cfg.

[rndmh3ro]

Thanks!

[fitz123]

It annoys me a long time, but I was too lazy to deal with it until this #78 issue)