Install and configure (Ubuntu) in glance

[Anandharaj]

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: DB creation steps is missing on step 1 (Prerequisites)
- [ ] This is a doc addition request.
- [ ] 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: 15.0.0.0rc2.dev25 on 'Wed Aug 23 03:33:04 2017, commit 9820166'
SHA: 982016670fe908e5d7026714b115e63b7c31b46b
Source: https://git.openstack.org/cgit/openstack/glance/tree/doc/source/install/install-ubuntu.rst
URL: https://docs.openstack.org/glance/pike/install/install-ubuntu.html