Selenium integration tests need methods for wait till element, text visible

[Amogh]

Selenium integration tests need method for wait till element visible, wait till till element disappears and wait until text present in the element
As elements are dynamically identified based on page format, locator is no more used explicitly. Need methods for web driver to explicitly wait:
  a. for element to be present
  b. for element to disappear
  c. for text to be present in element

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/151796

[Vlad Okhrimenko (vokhrimenko)]

ssory, it's happend after my rebase

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/151796
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=14b9255160ffb621b8cd65743169b912f20c2973
Submitter: Jenkins
Branch: master

commit 14b9255160ffb621b8cd65743169b912f20c2973
Author: mavinagi <email address hidden>
Date: Fri Jan 30 15:57:23 2015 -0600

    Add wait till element methods for selenium Integration tests.

    Modified basewebobject file.
    In BaseWebObject added below methods:
     * _is_element_displayed
     * _is_text_visible
     * _wait_till_element_visible
     * _wait_till_element_disappears
    Modified _wait_till_text_present_in_element

    Partially implements blueprint: selenium-integration-testing
    Closes-Bug: #1416555

    Change-Id: I054e524489ef5e8d8bdc15a219c52d8aeda9bdb4