adding support for Origins-Pattern in unattended upgrade

apt/templates/unattended_config.jinja

 {% set apt = pillar.get('apt', {}) -%}
 {% set unattended = apt.get('unattended', {}) -%}
 {% set allowed_origins = unattended.get('allowed_origins', ['${distro_id}:${distro_codename}-security']) -%}
+{% set origins_patterns = unattended.get('origins_patterns', ['origin=Debian,archive=stable,label=Debian-Security']) -%}
 {% set package_blacklist = unattended.get('package_blacklist', {}) -%}
 {% set auto_fix_interrupted_dpkg = unattended.get('auto_fix_interrupted_dpkg', 'true') -%}
 {% set minimal_steps = unattended.get('minimal_steps', 'false') -%}
         "{{ pattern }}";
         {%- endfor %}
 };
+Unattended-Upgrade::Origins-Pattern {
+        {%- for pattern in origins_patterns %}
+        "{{ pattern }}";
+        {%- endfor %}
+}
 Unattended-Upgrade::Package-Blacklist {
         {%- for package in package_blacklist %}
         "{{ package }}";

pillar.example

     package_blacklist:
       - package1
       - package2
+    origins_patterns:
+      - origin=SaltStack
+      - origin=Debian,archive=stable,label=Debian-Security
+      - origin=Debian,archive=oldstable,label=Debian-Security
     auto_fix_interrupted_dpkg: true
     minimal_steps: false
     install_on_shutdown: false