Adding Apache's plugin support

This plugin supports issuing/renewing certificates without needing
to stop/start Apache's daemon.

This change also adds a variable to allow override default letsencrypt
config directory (/etc/letsencrypt).

defaults/main.yml

@@ -4,10 +4,12 @@ certbot_auto_renew: true
 certbot_auto_renew_user: "{{ ansible_user | default(lookup('env', 'USER')) }}"
 certbot_auto_renew_hour: 3
 certbot_auto_renew_minute: 30
-certbot_auto_renew_options: "--quiet --no-self-upgrade"
+certbot_auto_renew_options: "--config-dir {{ certbot_config_dir }}
+  --{{ certbot_create_method }} --quiet --no-self-upgrade"
 
 # Parameters used when creating new Certbot certs.
 certbot_create_if_missing: false
+# Supported methods: standalone and apache
 certbot_create_method: standalone
 certbot_admin_email: email@example.com
 certbot_certs: []
@@ -18,8 +20,9 @@ certbot_certs: []
 # - domains:
 #     - example3.com
 certbot_create_command: >-
-  {{ certbot_script }} certonly --standalone --noninteractive --agree-tos
-  --email {{ cert_item.email | default(certbot_admin_email) }}
+  {{ certbot_script }} --config-dir {{ certbot_config_dir }}
+  certonly --{{ certbot_create_method }} --noninteractive
+  --agree-tos --email {{ cert_item.email | default(certbot_admin_email) }}
   -d {{ cert_item.domains | join(',') }}
 
 certbot_create_standalone_stop_services:
@@ -36,3 +39,9 @@ certbot_keep_updated: true
 
 # Where to put Certbot when installing from source.
 certbot_dir: /opt/certbot
+
+# Certbot extra Packages (To install additional packages like certbot-apache)
+certbot_extra_packages: ""
+
+# Certbot config directory
+certbot_config_dir: /etc/letsencrypt