ci(cirrus): update test matrix

.cirrus.yml

@@ -6,26 +6,26 @@ docker_builder:
   env:
     matrix:
       - INSTANCE: default-debian-10-develop-py3
-      - INSTANCE: default-ubuntu-1804-develop-py3
+      # - INSTANCE: default-ubuntu-1804-develop-py3
       # - INSTANCE: default-centos-7-develop-py3
       # - INSTANCE: default-fedora-30-develop-py3
       # - INSTANCE: default-opensuse-leap-15-develop-py3
       # - INSTANCE: default-amazonlinux-2-develop-py2
-      - INSTANCE: default-debian-9-2019-2-py3
+      # - INSTANCE: default-debian-9-2019-2-py3
       - INSTANCE: default-ubuntu-1804-2019-2-py3
       # - INSTANCE: default-centos-7-2019-2-py3
       # - INSTANCE: default-fedora-30-2019-2-py3
       # - INSTANCE: default-opensuse-leap-15-2019-2-py3
-      # - INSTANCE: default-amazonlinux-2-2019-2-py2
-      - INSTANCE: default-debian-9-2018-3-py2
+      - INSTANCE: default-amazonlinux-2-2019-2-py2
+      # - INSTANCE: default-debian-9-2018-3-py2
       # - INSTANCE: default-ubuntu-1604-2018-3-py2
       # - INSTANCE: default-centos-7-2018-3-py2
-      # - INSTANCE: default-fedora-29-2018-3-py2
-      # - INSTANCE: default-opensuse-leap-15-2018-3-py2
+      - INSTANCE: default-fedora-29-2018-3-py2
+      - INSTANCE: default-opensuse-leap-15-2018-3-py2
       # - INSTANCE: default-amazonlinux-2-2018-3-py2
       # - INSTANCE: default-debian-8-2017-7-py2
       # - INSTANCE: default-ubuntu-1604-2017-7-py2
-      # - INSTANCE: default-centos-6-2017-7-py2
+      - INSTANCE: default-centos-6-2017-7-py2
       # - INSTANCE: default-fedora-29-2017-7-py2
       # - INSTANCE: default-opensuse-leap-15-2017-7-py2
       # - INSTANCE: default-amazonlinux-2-2017-7-py2