Add ansible package (#2096)

* Add ansible package

* Change source_url to https

packages/ansible.rb

+require 'package'
+
+class Ansible < Package
+  description 'Ansible is a radically simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs.'
+  homepage 'https://www.ansible.com/'
+  version '2.4.3'
+  source_url 'https://releases.ansible.com/ansible/ansible-2.4.3.0.tar.gz'
+  source_sha256 '0e98b3a56928d03979d5f8e7ae5d8e326939111b298729b03f00b3ad8f998a3d'
+
+  depends_on 'python27'
+
+  def self.install
+    system "yes | pip install setuptools"
+    system "pip install --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR} -I ansible==2.4.3"
+    system "yes | pip uninstall setuptools"
+  end
+end