##### SUMMARY
`ansible-galaxy collection install` currently requires the user to specify an install path using the `-p` option. Galaxy currently generates and displays the CLI command for installing a collection. There is no way for Galaxy to determine a value for `-p`, and hard coding a default value into Galaxy makes no sense.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
`ansible-galaxy`

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```
ansible 2.10.0.dev0
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/Users/chouseknecht/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /Users/chouseknecht/projects/ansible/lib/ansible
  executable location = /Users/chouseknecht/.pyenv/versions/venv27/bin/ansible
  python version = 2.7.14 (default, Nov 14 2017, 23:24:24) [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.38)]
```

""" Delete a role from Ansible Galaxy. """
        github_user = context.CLIARGS['github_user']
        github_repo = context.CLIARGS['github_repo']
        resp = self.api.delete_role(github_user, github_repo)
        if len(resp['deleted_roles']) > 1:
            display.display("Deleted the following roles:")
            display.display("ID     User            Name")
            display.display("------ --------------- ----------")
            for role in resp['deleted_roles']:
                display.display("%-8s %-15s %s" % (role.id, role.namespace, role.name))
        display.display(resp['status'])
        return True