[Fuel CI] build 7.0 ISO is red

[Roman Vyalov]

https://ci.fuel-infra.org/job/7.0-community.all/643/console

  --resolve $pkg `cat $nonconflicting_pkgs`; then \
     echo "Failed to resolve package $pkg" >&2; \
     exit 1; \
    fi; \
   done > "$conflicting_pkgs_urls" && \
   cat "$out" "$conflicting_pkgs_urls" > "/home/jenkins/workspace/tmp/7.0-community.all/build/mirror/centos/urls.list.out" && \
   break; \
  fi; \
  count=$((count+1)); \
 done
Unable to resolve packages dependencies
No Match for argument kernel-2.6.32-642.15.1.el6
make: *** [/home/jenkins/workspace/tmp/7.0-community.all/build/mirror/centos/urls.list] Error 1
Build step 'Execute shell' marked build as failure

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: master
Change author: Valeriy Saharov <email address hidden>
Review: https://review.fuel-infra.org/32650

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/32650
Submitter: Dmitry Kaigarodsev <email address hidden>
Branch: master

Commit: e4102be511dc64b71aaf282a8e8b5f38a021a8ee
Author: Valeriy Saharov <email address hidden>
Date: Thu Mar 30 10:50:27 2017

Added EXTRA_RPM_REPOS option

For installing new version of kernel with a lot of security fixes
 we need to add additional repos with updated package.

Change-Id: I8fe0d5246fe468b781d68112405adf07fe37c6c0
Closes-Bug: #1677528