Added epoch to the spec

Added epoch to the spec

This should make the version of local build package bigger than anything
from distribution.

Fixes this installation error:

Problem: depanneur-0.14-1.1.i586 requires tizen-build >= 20140612, but
this requirement cannot be provided
  uninstallable providers: build-20131112-7.1.i586[tools-ToolsDevel]
 Solution 1: Following actions will be done:
  do not install depanneur-0.14-1.1.i586
  do not install gbs-jenkins-scripts-0.23-1.1.1.noarch
 Solution 2: do not install build-20150115-4.1.noarch
 Solution 3: break depanneur-0.14-1.1.i586 by ignoring some of its
dependencies

Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com>