4 seconds for 'all-conflicts-resolved-packages' is too short in update test
openQA test in opensuse-Tumbleweed-NET-x86_64-Build20170802-update_123@64bit fails in start_install,
also fails in NET-update_121 and NET-update_122, NOTE that it's random, but see that happened often recently.
Fails since (at least) Build 20170801
Should not random fail.
The root cause should be 4 seconds for 'all-conflicts-resolved-packages' is too short, see https://openqa.opensuse.org/tests/461630#step/start_install/14
increase the timeout should help.