Fix azure dns challenge bug (#91)

* Trigger tests
* Trigger more tests
* Fix azure dns challenge bug

Added condition to only try to do creation, removal of txt records if there is challenge data.
This can happen if certificate is not due for renewal.

---------

Co-authored-by: Andreas Hering <andreas.hering@t-systems.com>

Author: avalor1

roles/acme/tasks/challenge/dns-01/azure.yml

@@ -11,7 +11,10 @@
     records:
       - entry: "{{ challenge['challenge_data'][item]['dns-01']['resource_value'] }}"
   loop: "{{ acme_domain.subject_alt_name.top_level }}"
-  when: acme_domain.subject_alt_name.top_level is defined
+  when:
+    - acme_domain.subject_alt_name.top_level is defined
+    # only runs if the challenge is run the first time, because then there is challenge_data
+    - challenge['challenge_data'][item] is defined
 
 # split second_level for zone_name and if subdomain is defined add subdomain to relative_name
 - name: Add a new TXT record to the SAN second-level domains
@@ -25,7 +28,10 @@
     records:
       - entry: "{{ challenge['challenge_data'][item]['dns-01']['resource_value'] }}"
   loop: "{{ acme_domain.subject_alt_name.second_level }}"
-  when: acme_domain.subject_alt_name.second_level is defined
+  when:
+    - acme_domain.subject_alt_name.second_level is defined
+    # only runs if the challenge is run the first time, because then there is challenge_data
+    - challenge['challenge_data'][item] is defined
 
 - name: Let the challenge be validated and retrieve the cert and intermediate certificate
   community.crypto.acme_certificate:
@@ -54,7 +60,10 @@
     records:
       - entry: "{{ challenge['challenge_data'][item]['dns-01']['resource_value'] }}"
   loop: "{{ acme_domain.subject_alt_name.top_level }}"
-  when: acme_domain.subject_alt_name.top_level is defined
+  when:
+    - acme_domain.subject_alt_name.top_level is defined
+    # only runs if the challenge is run the first time, because then there is challenge_data
+    - challenge['challenge_data'][item] is defined
 
 - name: Remove created SAN second-level TXT records to keep DNS zone clean
   azure.azcollection.azure_rm_dnsrecordset:
@@ -67,4 +76,7 @@
     records:
       - entry: "{{ challenge['challenge_data'][item]['dns-01']['resource_value'] }}"
   loop: "{{ acme_domain.subject_alt_name.second_level }}"
-  when: acme_domain.subject_alt_name.second_level is defined
+  when:
+    - acme_domain.subject_alt_name.second_level is defined
+    # only runs if the challenge is run the first time, because then there is challenge_data
+    - challenge['challenge_data'][item] is defined