ci: Re-add Debian jessie

.gitlab-ci.yml

@@ -151,6 +151,48 @@ upload/debian/stretch:
     - debian/stretch:x86_64
     - debian/stretch
 
+# jessie
+debian/jessie:
+  <<: *source
+  variables:
+    DOCKER_IMAGE: debian/jessie
+
+debian/jessie:x86_64:
+  <<: *binary
+  variables:
+    DOCKER_IMAGE: debian/jessie
+  dependencies:
+    - debian/jessie
+
+test/debian/jessie:x86_64:
+  <<: *test
+  variables:
+    DOCKER_IMAGE: debian/jessie
+  dependencies:
+    - debian/jessie
+
+debian/jessie:x86:
+  <<: *binary
+  variables:
+    DOCKER_IMAGE: debian/jessie:x86
+  dependencies:
+    - debian/jessie
+
+test/debian/jessie:x86:
+  <<: *test
+  variables:
+    DOCKER_IMAGE: debian/jessie:x86
+  dependencies:
+    - debian/jessie:x86
+    - debian/jessie:x86_64
+
+upload/debian/jessie:
+  <<: *upload
+  dependencies:
+    - debian/jessie:x86
+    - debian/jessie:x86_64
+    - debian/jessie
+
 ###################################
 # Ubuntu
 ###################################