Manual Trove Installation in trove

[Chason Chan]

This bug tracker is for errors with the documentation, use the following as a template and remove or add fields as you see fit. Convert [ ] into [x] to check boxes:

- [X] This doc is inaccurate in this way: ______

There are a few issues with the user guide right now:
  https://git.openstack.org/cgit/openstack/trove/tree/doc/source/install/manual_install.rst

Cosmetically, is not formatted properly for RST. There are some lines are too long and some extra indentation. We should upgrade this page.

- [ ] This is a doc addition request.
- [X] I have a fix to the document that I can paste below including example: input and output.

If you have a troubleshooting or support issue, use the following resources:

 - Ask OpenStack: http://ask.openstack.org
 - The mailing list: http://lists.openstack.org
 - IRC: 'openstack' channel on Freenode

-----------------------------------
Release: 8.0.1.dev33 on 2017-10-26 22:42
SHA: 7bddc1ae803315939b7d451879f2d38ff6b3e82d
Source: https://git.openstack.org/cgit/openstack/trove/tree/doc/source/install/manual_install.rst
URL: https://docs.openstack.org/trove/latest/install/manual_install.html