docs: Fixed regex for vCenter host

[OpenStack Infra]

https://review.openstack.org/140076
commit 4ed4ff42cd2b80b1141bdd7640779efe0a2ca2b9
Author: Stepan Rogov <email address hidden>
Date: Mon Dec 8 19:48:52 2014 +0300

    Fixed regex for vCenter host

    Fixed regex for vCenter IP to allow use hostnames too
    Fixed fields descriptions for vCenter IP

    Docimpact
    closes-bug: #1370753

    Change-Id: I79dbd28f9880b0c0a9d918fa1d86876aec2ec38d

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/141296

[Andrey Danin (gcon-monolake)]

The original bug was fixed for Fuel 6.1. I think it's better to wait until we'll issue Fuel 6.0 before start fixing this bug.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/141296
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=e0fe463688467cdf45a9f5d7df84b3e86a566382
Submitter: Jenkins
Branch: master

commit e0fe463688467cdf45a9f5d7df84b3e86a566382
Author: Irina Povolotskaya <email address hidden>
Date: Fri Dec 12 10:54:22 2014 +0300

    Update vCenter hypervisor screenshot in wizard

    In Fuel 6.0, vCenter settings can take not only IP address,
    but also Hostname in the corresponding field.

    Two screenshots are updated:

    * for wizard (hv)
    * for Fuel web UI (Settings tab)

    Change-Id: Id798e862871ba5876c0191cfdb9b1a1479531608
    Closes-Bug: 1401169