Add support for more backends (#10)

templates/restic.cron.j2

@@ -2,12 +2,24 @@
 # restic backup jobs
 # vi: ft=jinja.crontab
 
+# {{ ansible_managed }}
 SHELL=/bin/sh
 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
-AWS_ACCESS_KEY_ID="{{ item.aws_access_key_id | default('') }}"
-AWS_SECRET_ACCESS_KEY="{{ item.aws_secret_access_key | default('') }}"
 RESTIC_REPOSITORY="{{ item.url }}"
 RESTIC_PASSWORD="{{ item.password }}"
+{% if aws_access_key_id in item %}
+AWS_ACCESS_KEY_ID="{{ item.aws_access_key_id }}"
+AWS_SECRET_ACCESS_KEY="{{ item.aws_secret_access_key }}"
+{% elif b2_account_id in item %}
+B2_ACCOUNT_ID="{{ item.b2_account_id }}"
+B2_ACCOUNT_KEY="{{ item.b2_account_key }}"
+{% elif azure_account_name in item %}
+AZURE_ACCOUNT_NAME="{{ item.azure_account_name }}"
+AZURE_ACCOUNT_KEY="{{ item.azure_account_key }}"
+{% elif os_storage_url in item %}
+OS_STORAGE_URL="{{ item.os_storage_url }}"
+OS_AUTH_TOKEN="{{ item.os_auth_token }}"
+{% endif %}
 {% set restic_stdin = '| restic backup --stdin' %}
 {% macro tags(tags) -%}
   {% if tags is defined %}{% for tag in tags %} --tag {{ tag }}{% endfor %}{% endif %}