Remove Ubuntu 20.04 from test matrix, and switch to 7.8.0 as default 7.x version

Author: Gavin Williams

.travis.yml

@@ -54,85 +54,85 @@ jobs:
     - TASK=beaker:amazonlinux-1-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:amazonlinux-1-x64:acceptance[7.7.1]
+    - TASK=beaker:amazonlinux-1-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:amazonlinux-2-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:amazonlinux-2-x64:acceptance[7.7.1]
+    - TASK=beaker:amazonlinux-2-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:centos-6-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:centos-6-x64:acceptance[7.7.1]
+    - TASK=beaker:centos-6-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:centos-7-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:centos-7-x64:acceptance[7.7.1]
+    - TASK=beaker:centos-7-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:centos-8-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:centos-8-x64:acceptance[7.7.1]
+    - TASK=beaker:centos-8-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:oracle-6-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:oracle-6-x64:acceptance[7.7.1]
+    - TASK=beaker:oracle-6-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:oracle-7-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:oracle-7-x64:acceptance[7.7.1]
+    - TASK=beaker:oracle-7-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:debian-8-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:debian-8-x64:acceptance[7.7.1]
+    - TASK=beaker:debian-8-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:debian-9-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:debian-9-x64:acceptance[7.7.1]
+    - TASK=beaker:debian-9-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:debian-10-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:debian-10-x64:acceptance[7.7.1]
+    - TASK=beaker:debian-10-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:ubuntu-server-1404-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:ubuntu-server-1404-x64:acceptance[7.7.1]
+    - TASK=beaker:ubuntu-server-1404-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:ubuntu-server-1604-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:ubuntu-server-1604-x64:acceptance[7.7.1]
+    - TASK=beaker:ubuntu-server-1604-x64:acceptance[7.8.0]
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
     - TASK=beaker:ubuntu-server-1804-x64:acceptance
   - env:
     - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:ubuntu-server-1804-x64:acceptance[7.7.1]
-  - env:
-    - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:ubuntu-server-2004-x64:acceptance
-  - env:
-    - BEAKER_PUPPET_COLLECTION=puppet6
-    - TASK=beaker:ubuntu-server-2004-x64:acceptance[7.7.1]
+    - TASK=beaker:ubuntu-server-1804-x64:acceptance[7.8.0]
+  # - env:
+  #   - BEAKER_PUPPET_COLLECTION=puppet6
+  #   - TASK=beaker:ubuntu-server-2004-x64:acceptance
+  # - env:
+  #   - BEAKER_PUPPET_COLLECTION=puppet6
+  #   - TASK=beaker:ubuntu-server-2004-x64:acceptance[7.8.0]
   - stage: snapshots
     env:
     - TASK=beaker:ubuntu-server-1404-x64:snapshot