Add more CI variants

.gitlab-ci.yml

@@ -19,19 +19,31 @@ build on debian-like OS:
       - KEA_VERSION: "1-6"
         GPG_KEY: "0607E2621F1564A6"
         DISTRO: debian
-        RELEASE: [stretch, buster]
+        RELEASE: [stretch, buster, bullseye]
       - KEA_VERSION: "1-7"
         GPG_KEY: "40544590508A17DE"
         DISTRO: debian
-        RELEASE: [stretch, buster]
+        RELEASE: [stretch, buster, bullseye]
       - KEA_VERSION: "1-8"
         GPG_KEY: "4DD5AE28ADA7268E"
         DISTRO: debian
-        RELEASE: [stretch, buster]
+        RELEASE: [stretch, buster, bullseye]
       - KEA_VERSION: "1-9"
         GPG_KEY: "5DC67B0A74E30739"
         DISTRO: debian
-        RELEASE: [stretch, buster]
+        RELEASE: [stretch, buster, bullseye]
+      - KEA_VERSION: "1-6"
+        GPG_KEY: "0607E2621F1564A6"
+        DISTRO: ubuntu
+        RELEASE: [focal, bionic]
+      - KEA_VERSION: "1-7"
+        GPG_KEY: "40544590508A17DE"
+        DISTRO: ubuntu
+        RELEASE: [focal, bionic]
+      - KEA_VERSION: "1-8"
+        GPG_KEY: "4DD5AE28ADA7268E"
+        DISTRO: ubuntu
+        RELEASE: [focal, bionic]
       - KEA_VERSION: "1-9"
         GPG_KEY: "5DC67B0A74E30739"
         DISTRO: ubuntu