cloudcli::_aws_linux fails on setuptools install on ubuntu 16.04

[nergdron]

This used to work, and I haven't touched the codebase in a while. but today, running with kitchenci to test in a fresh Ubuntu 16.04 VM, this part of the cookbook fails when attempting to install python setuptools.

       Recipe: cloudcli::_aws_linux
         * python_runtime[2] action install
           * poise_languages_system[python2.7] action install
             - install version 2.7.12-1ubuntu0~16.04.4 of package python2.7-dev
           * apt_package[python2.7, python2.7-dev] action nothing (skipped due to action :nothing)
         
         * python_runtime_pip[2] action install
           - Bootstrapping pip latest from https://bootstrap.pypa.io/get-pip.py
         * python_package[setuptools] action install
           
           ================================================================================
           Error executing action `install` on resource 'python_package[setuptools]'
           ================================================================================
           
           Mixlib::ShellOut::ShellCommandFailed
           ------------------------------------
           Expected process to exit with [0], but received '1'
           ---- Begin output of ["/usr/bin/python2.7", "-", "setuptools"] ----
           STDOUT: 
           STDERR: No handlers could be found for logger "pip._internal.download"
           Traceback (most recent call last):
             File "<stdin>", line 42, in <module>
           AttributeError: type object 'InstallRequirement' has no attribute 'from_line'
           ---- End output of ["/usr/bin/python2.7", "-", "setuptools"] ----
           Ran ["/usr/bin/python2.7", "-", "setuptools"] returned 1
           
           Cookbook Trace:
           ---------------
           /tmp/kitchen/cache/cookbooks/poise-languages/files/halite_gem/poise_languages/command/mixin.rb:207:in `tap'
           /tmp/kitchen/cache/cookbooks/poise-languages/files/halite_gem/poise_languages/command/mixin.rb:207:in `language_command_shell_out!'
           /tmp/kitchen/cache/cookbooks/poise-languages/files/halite_gem/poise_languages/command/mixin.rb:222:in `block in language_command_mixin'
           /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/resources/python_package.rb:329:in `pip_command'
           /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/resources/python_package.rb:353:in `pip_outdated'
           /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/resources/python_package.rb:221:in `check_package_versions'
           /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/resources/python_package.rb:200:in `load_current_resource'
           /tmp/kitchen/cache/cookbooks/poise/files/halite_gem/poise/helpers/notifying_block.rb:69:in `notifying_block'
           /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/python_providers/base.rb:50:in `action_install'
           
           Resource Declaration:
           ---------------------
           # In /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/python_providers/base.rb
           
           138:         python_package 'setuptools' do
           139:           parent_python new_resource
           140:           version setuptools_version if setuptools_version.is_a?(String)
           141:         end
           142:       end
           
           Compiled Resource:
           ------------------
           # Declared in /tmp/kitchen/cache/cookbooks/poise-python/files/halite_gem/poise_python/python_providers/base.rb:138:in `install_setuptools'
           
           python_package("setuptools") do
             package_name "setuptools"
             action [:install]
             default_guard_interpreter :default
             declared_type :python_package
             cookbook_name "cloudcli"
             parent_python python_runtime[2]
             timeout 900
           end
           
           System Info:
           ------------
           chef_version=13.8.5
           platform=ubuntu
           platform_version=16.04
           ruby=ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-linux]
           program_name=chef-client worker: ppid=2828;start=00:37:34;
           executable=/opt/chef/bin/chef-client