time of execution verification is wrong

[Andriy Kurilin]

subunit2json calculates wrong total time, which is equal to duration of parsing log file

[Andriy Kurilin (andreykurilin)]

Proposed-fix: https://review.openstack.org/#/c/180144/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/180144
Committed: https://git.openstack.org/cgit/openstack/rally/commit/?id=c91b7e24ff562b7ba46fef1d38e7306a9edbd92c
Submitter: Jenkins
Branch: master

commit c91b7e24ff562b7ba46fef1d38e7306a9edbd92c
Author: Andrey Kurilin <email address hidden>
Date: Sat Jul 4 03:51:58 2015 +0300

    Implement subunit_parser

    subunit2json module was implemented based on subunit2html module, which
    cause several issues(see attached bugs for more details).

    The main approach of new parser: it designed to be used from Python code,
    not as live-filter for a stream.

    Since such parser can be used not only for verification, the implementation
    is moved to common dir.

    Also, this patch:
     - removes fake log, which was left from xml parser;
     - removes all db calls(except list call) from cli.verify module.

    Closes-Bug: #1456810
    Closes-Bug: #1471400
    Change-Id: Ifcfce827a0df1e75f58e198ee899d4bb85ca9376