ZDUP: Do not load inst-tests
install / partitioning / splituser: increase /usr partition to 5GB, as the tests run out of disk space
Merge pull request #188 from DimStar77/splituser-5gb

Splituser 5gb
sle11_network.pm - assert screen to ensure it's ready before typing
sle11_network.pm - if BETA, allow server side errors downloading release notes
welcome.pm - Ensure beta warnings present if BETA, fail if present in non-BETA
Merge branch 'master' into sle12