Fix aplay test

Make sure that we are not muted and we have some reasonable volume levels
before trying to play anything and check for volume levels afterwards.
Check that we have i686 version of glibc

Basic check to test whether we have also i686 version of glibc available.
Revert "Check that we have i686 version of glibc"

This reverts commit 15a52256cebffcf4ff83ca090115dfca1ae5f3b3.

https://github.com/openSUSE-Team/os-autoinst/pull/17#issuecomment-26980635
export FLAVOR
fix promo bootloader slection
use interactive mode in zypper up

if not using interactive the actual screen we want to match may scroll
out of the window
log times when tests run

to be able to better understand timeouts
fix ar in zypper up
take additional screenshot before confirming reboot dialog
print UTC timestamp to log
Improved glibc test
Revert "Check that we have i686 version of glibc"

This reverts commit 15a52256cebffcf4ff83ca090115dfca1ae5f3b3.

https://github.com/openSUSE-Team/os-autoinst/pull/17#issuecomment-26980635
fix gnucash test fail