Improve manual deployment documentation

[Denis M.]

According to https://etherpad.openstack.org/p/trove-doc-items

We need to improve manual install docs

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/107363

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/107422

[OpenStack Infra (hudson-openstack)]

Change abandoned by Denis M. (<email address hidden>) on branch: master
Review: https://review.openstack.org/107422

[Amrith Kumar (amrith)]

Retained importance to "Medium" (bugscrub, 2014-10-23)

[OpenStack Infra (hudson-openstack)]

Change abandoned by Denis M. (<email address hidden>) on branch: master
Review: https://review.openstack.org/107363

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/107363
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=cdc826c3586ec24c1786bdeb40836faaad0d4481
Submitter: Jenkins
Branch: master

commit cdc826c3586ec24c1786bdeb40836faaad0d4481
Author: Denys Makogon <email address hidden>
Date: Mon May 25 16:45:30 2015 +0300

    Improving manual install docs

    Reasons:
     - manual install docs are outdated;

    Changes:
     - doc improvement;

    Change-Id: I3580293eb92e9063b3989a852e8e80715a09156b
    Closes-Bug: #1342697