ci(platform): add `arch-base-latest` (commented out for now) [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/50

.travis.yml

     # - INSTANCE: default-fedora-30-develop-py3
     # - INSTANCE: default-opensuse-leap-15-develop-py3
     # - INSTANCE: default-amazonlinux-2-develop-py2
+    # - INSTANCE: default-arch-base-latest-develop-py2
     - 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-arch-base-latest-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-amazonlinux-2-2018-3-py2
+    # - INSTANCE: default-arch-base-latest-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-fedora-29-2017-7-py2
     # - INSTANCE: default-opensuse-leap-15-2017-7-py2
     # - INSTANCE: default-amazonlinux-2-2017-7-py2
+    # - INSTANCE: default-arch-base-latest-2017-7-py2
 
 script:
   - bin/kitchen verify ${INSTANCE}

kitchen.yml

       provision_command:
         - curl -o bootstrap-salt.sh -L https://bootstrap.saltstack.com
         - sh bootstrap-salt.sh -XdPbfrq -x python2 git develop
+  - name: arch-base-latest-develop-py2
+    driver:
+      image: netmanagers/salt-develop-py2:arch-base-latest
+      provision_command:
+        - curl -o bootstrap-salt.sh -L https://bootstrap.saltstack.com
+        - sh bootstrap-salt.sh -XdPbfrq -x python2 git develop
+      run_command: /usr/lib/systemd/systemd
 
   ## SALT `2019.2`
   - name: debian-9-2019-2-py3
   - name: amazonlinux-2-2019-2-py2
     driver:
       image: netmanagers/salt-2019.2-py2:amazonlinux-2
+  - name: arch-base-latest-2019-2-py2
+    driver:
+      image: netmanagers/salt-2019.2-py2:arch-base-latest
+      run_command: /usr/lib/systemd/systemd
 
   ## SALT `2018.3`
   - name: debian-9-2018-3-py2
   - name: amazonlinux-2-2018-3-py2
     driver:
       image: netmanagers/salt-2018.3-py2:amazonlinux-2
+  - name: arch-base-latest-2018-3-py2
+    driver:
+      image: netmanagers/salt-2018.3-py2:arch-base-latest
+      run_command: /usr/lib/systemd/systemd
 
   ## SALT `2017.7`
   - name: debian-8-2017-7-py2
   - name: amazonlinux-2-2017-7-py2
     driver:
       image: netmanagers/salt-2017.7-py2:amazonlinux-2
+  - name: arch-base-latest-2017-7-py2
+    driver:
+      image: netmanagers/salt-2017.7-py2:arch-base-latest
+      run_command: /usr/lib/systemd/systemd
 
 provisioner:
   name: salt_solo