Issue #1760: Workaround for easy_install missing in Ubuntu 18.04.

Author: geerlingguy

.travis.yml

@@ -20,6 +20,8 @@ env:
     # Defaults - Ubuntu 18.04.
     - type: defaults
       distro: ubuntu1804
+      # https://bugs.launchpad.net/ubuntu/+source/python-setuptools/+bug/1774419
+      easy_install_cmd: python /usr/lib/python2.7/dist-packages/easy_install.py
     # Defaults - Ubuntu 16.04.
     - type: defaults
       distro: ubuntu1604

tests/run-tests.sh

@@ -16,6 +16,7 @@ CONTAINER_ID="${CONTAINER_ID:-dvm-test}"
 type="${type:-tests/defaults}"
 distro="${distro:-ubuntu1604}"
 cleanup="${cleanup:-true}"
+easy_install_cmd=${easy_install_cmd:-easy_install}
 
 ## Set up vars for Docker setup.
 # CentOS 7