Fix the conda installation script. It seems that there is a new version that fails to create a directory.

conda/defaults/main.yml

@@ -6,6 +6,7 @@ conda_url: 'https://repo.continuum.io/miniconda/{{ conda_installer_file }}'
 conda_install_prefix: '/srv/conda{{ conda_ver }}'
 # Change it to an unprivileged user
 conda_user: root
+conda_user_home: /root
 
 #conda_env_pkgs:
 #  - { env_name: '', env_opts: '', conda_prefix: '{{ conda_install_prefix }}', pkg: '', repo_list: '' }