fix dns-01-lexicon.yml not included (#8)

Include dns-01-lexicon.yml only depending on dehydrated_use_lexicon.
default vaule for dehydrated_use_lexicon is changed to depend on
dehydrated_challengetype (true if dns-01).

README.md

@@ -36,7 +36,7 @@ dehydrated_install_root | Where to install dehydrated | /opt/dehydrated
 dehydrated_update | Update dehydrated sources on ansible run | yes
 dehydrated_version | Which version to check out from github | HEAD
 dehydrated_challengetype | Challenge to use (http-01, dns-01) | http-01
-dehydrated_use_lexicon | Use lexicon if challengetype is dns-01 | yes
+dehydrated_use_lexicon | Enable the use of lexicon | yes if dehydrated_challengetype == dns-01 else no
 dehydrated_lexicon_dns | Options for running lexicon | {}
 dehydrated_hooks | Dict with hook-names for which to add scripts |
 dehydrated_hook_scripts | Add additional scripts to hooks-Directory | []

defaults/main.yml

@@ -13,7 +13,7 @@ dehydrated_key_algo: rsa
 dehydrated_keysize: 4096
 dehydrated_ca: "https://acme-v02.api.letsencrypt.org/directory"
 dehydrated_cronjob: yes
-dehydrated_use_lexicon: yes
+dehydrated_use_lexicon: "{{ dehydrated_challengetype == 'dns-01' }}"
 dehydrated_run_on_changes: yes
 dehydrated_systemd_timer: no
 dehydrated_hook_scripts: []

tasks/main.yml

@@ -45,7 +45,6 @@
 - name: Include dns-01-lexicon.yml
   include_tasks: dns-01-lexicon.yml
   when:
-    - dehydrated_challengetype == 'dns-01'
     - dehydrated_use_lexicon
 
 - name: Install cronjob