Gcc need to be downgraded from 6 to 5, because Gcc 6 is too new for
the latest Ubuntu LTS (16.04). This means Devtoolset-4 need to be used
instead of Devtoolset-6.
Task-number: QTBUG-64820
Change-Id: I2601aaaff5f3bbbadd867105fd4155239ab89825
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>
Added all the provisioning scripts that install required
programs and make changes to certain settings. These are needed to
build qt5.
This commit replaces RHEL 7.2 in desktop builds, android builds
and INTEGRITY builds.
Task-number: QTQAINFRA-1251
Task-number: QTQAINFRA-1252
Task-number: QTQAINFRA-1253
Task-number: QTQAINFRA-1267
Task-number: QTQAINFRA-1269
Change-Id: Icef19df7fb799a4008ccdc0584821c982055e339
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>
