[opensuse-factory] Renaming of upgrade test suite in openqa.opensuse.org

Hi release managers and openQA reviewers, As part of this task "42.3 upgrade tests use GM image instead of updated one" https://progress.opensuse.org/issues/39305 I plan to rename the names of the test suites that start with update_ to upgrade_ to avoid confusion. Definitions taken into account: - Security fixes (bugfix, PTF) -> zypper patch - Update = security fixes + update packages -> zypper update - Upgrade = Switch distribution version (eg. Leap 15.0 to Leap 15.1 or Tumbleweed snapshot 20190813 to snapshot 20190814) -> zypper dist- upgrade Be aware of the new names when reviewing openQA jobs. Kind Regards -- Sergio