##### 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)]
```

"""
        Perform the action on an Ansible Galaxy role. Must be combined with a further action like delete/install/init
        as listed below.
        """
        
        pass
    def execute_collection(self):
        """
        Perform the action on an Ansible Galaxy collection. Must be combined with a further action like init/install as
        listed below.
        """
        
        pass
    def execute_build(self):
        """
        Build an Ansible Galaxy collection artifact that can be stored in a central repository like Ansible Galaxy.
        By default, this command builds from the current working directory. You can optionally pass in the
        collection input path (where the ``galaxy.yml`` file is).
        """
        force = context.CLIARGS['force']
        output_path = GalaxyCLI._resolve_path(context.CLIARGS['output_path'])
        b_output_path = to_bytes(output_path, errors='surrogate_or_strict')
        if not os.path.exists(b_output_path):
            os.makedirs(b_output_path)
        elif os.path.isfile(b_output_path):
            raise AnsibleError("- the output collection directory %s is a file - aborting" % to_native(output_path))
        for collection_path in context.CLIARGS['args']:
            collection_path = GalaxyCLI._resolve_path(collection_path)
            build_collection(collection_path, output_path, force)
    def execute_init(self):