Use xenial to build all the versions newer than trusty

I'm not 100% sure why we can't use newer series to build the newer installers. But this seems to be what vanilla does

.travis.yml

@@ -439,6 +439,30 @@ matrix:
 # List Ubuntu LTS, newest to oldest
 # Then list non-LTS, newest to oldest
 ################################
+        - os: linux
+          addons:
+            apt:
+              packages:
+              - libsdl2-mixer-dev
+              - libpng-dev
+              - libgl1-mesa-dev
+              - libgme-dev
+              - libcurl4-openssl-dev
+              - p7zip-full
+              - gcc-4.8
+          compiler: gcc-4.8
+          dist: xenial
+          if: env(DPL_ENABLED) = "1" AND (env(_DPL_JOB_ENABLED) = "1" OR env(DPL_JOB_ENABLE_ALL) = "1")
+              AND (branch =~ /^.*deployer.*$/ OR (tag IS present AND env(DPL_TAG_ENABLED) = "1"))
+              AND env(DPL_TERMINATE_MAIN) != "1"
+          env:
+          - _DPL_JOB_ENABLED=1
+          - _DPL_JOB_NAME=focal
+          - _DPL_DPUT_TARGET=1
+          - _DPL_PACKAGE_SOURCE=1
+          - PACKAGE_DISTRO=focal
+          - PACKAGE_SUBVERSION=~20.04focal
+          #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
         - os: linux
           addons:
             apt:
@@ -463,6 +487,30 @@ matrix:
           - PACKAGE_DISTRO=bionic
           - PACKAGE_SUBVERSION=~18.04bionic
           #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
+        - os: linux
+          addons:
+            apt:
+              packages:
+              - libsdl2-mixer-dev
+              - libpng-dev
+              - libgl1-mesa-dev
+              - libgme-dev
+              - libcurl4-openssl-dev
+              - p7zip-full
+              - gcc-4.8
+          compiler: gcc-4.8
+          dist: xenial
+          if: env(DPL_ENABLED) = "1" AND (env(_DPL_JOB_ENABLED) = "1" OR env(DPL_JOB_ENABLE_ALL) = "1")
+              AND (branch =~ /^.*deployer.*$/ OR (tag IS present AND env(DPL_TAG_ENABLED) = "1"))
+              AND env(DPL_TERMINATE_MAIN) != "1"
+          env:
+          - _DPL_JOB_ENABLED=1
+          - _DPL_JOB_NAME=xenial
+          - _DPL_DPUT_TARGET=1
+          - _DPL_PACKAGE_SOURCE=1
+          - PACKAGE_DISTRO=xenial
+          - PACKAGE_SUBVERSION=~16.04xenial
+          #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
         - os: linux
           addons:
             apt:
@@ -505,59 +553,11 @@ matrix:
               AND env(DPL_TERMINATE_MAIN) != "1"
           env:
           - _DPL_JOB_ENABLED=1
-          - _DPL_JOB_NAME=disco
+          - _DPL_JOB_NAME=eoan
           - _DPL_DPUT_TARGET=1
           - _DPL_PACKAGE_SOURCE=1
-          - PACKAGE_DISTRO=disco
-          - PACKAGE_SUBVERSION=~19.04disco
-          #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
-        - os: linux
-          addons:
-            apt:
-              packages:
-              - libsdl2-mixer-dev
-              - libpng-dev
-              - libgl1-mesa-dev
-              - libgme-dev
-              - libcurl4-openssl-dev
-              - p7zip-full
-              - gcc-4.8
-          compiler: gcc-4.8
-          dist: xenial
-          if: env(DPL_ENABLED) = "1" AND (env(_DPL_JOB_ENABLED) = "1" OR env(DPL_JOB_ENABLE_ALL) = "1")
-              AND (branch =~ /^.*deployer.*$/ OR (tag IS present AND env(DPL_TAG_ENABLED) = "1"))
-              AND env(DPL_TERMINATE_MAIN) != "1"
-          env:
-          - _DPL_JOB_ENABLED=1
-          - _DPL_JOB_NAME=cosmic
-          - _DPL_DPUT_TARGET=1
-          - _DPL_PACKAGE_SOURCE=1
-          - PACKAGE_DISTRO=cosmic
-          - PACKAGE_SUBVERSION=~18.10cosmic
-          #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
-        - os: linux
-          addons:
-            apt:
-              packages:
-              - libsdl2-mixer-dev
-              - libpng-dev
-              - libgl1-mesa-dev
-              - libgme-dev
-              - libcurl4-openssl-dev
-              - p7zip-full
-              - gcc-4.8
-          compiler: gcc-4.8
-          dist: xenial
-          if: env(DPL_ENABLED) = "1" AND (env(_DPL_JOB_ENABLED) = "1" OR env(DPL_JOB_ENABLE_ALL) = "1")
-              AND (branch =~ /^.*deployer.*$/ OR (tag IS present AND env(DPL_TAG_ENABLED) = "1"))
-              AND env(DPL_TERMINATE_MAIN) != "1"
-          env:
-          - _DPL_JOB_ENABLED=1
-          - _DPL_JOB_NAME=xenial
-          - _DPL_DPUT_TARGET=1
-          - _DPL_PACKAGE_SOURCE=1
-          - PACKAGE_DISTRO=xenial
-          - PACKAGE_SUBVERSION=~16.04xenial
+          - PACKAGE_DISTRO=eoan
+          - PACKAGE_SUBVERSION=~19.10eoan
           #gcc-4.8 (Ubuntu 4.8.5-2ubuntu1~14.04.1) 4.8.5
     allow_failures:
       - compiler: clang-3.5