Merge branch 'firewall' & 'ldp' into system

README.md

inventory.sample

tasks/become_user_cfg.yml

tasks/ldp.yml

tasks/system_cfg/firewall.yml

tasks/system_cfg/ldp.yml

tasks/system_cfg/main.yml

tasks/system_cfg/templates/jail.local.j2

tasks/system_cfg/templates/ldp.conf.j2

tasks/templates/jail.local.j2

tasks/whoami.yml