Install SLES 16.0 Minimal VM as guest on SLES 16.0 system

[waynechen55]

• New module tests/virt_autotest/prepare_non_transactional_server.pm to perform all necessary or potential operations on non-transactional system before doing actual work like virtual machine installation. These operations may involve extra packages installation, product and extension registration, grub modification and many others.

• New subroutine is_reboot_needed in lib/utils.pm to determine whether system reboot is needed after changes being made. It uses setting NEEDS_REBOOTING or returned code of zypper needs-rebooting to judge whether reboot is really needed.

• New subroutine install_extra_packages in lib/utils.pm to wrap up already existing similar functionality in multiple modules, for example, tests/virt_autotest/prepare_non_transactional_server.pm and tests/virt_autotest/prepare_transactional_server.pm.

• New guest profile data/virt_autotest/guest_params_xml_files/sles_16_64_kvm_hvm_x86_64_qcow_ignition+combustion.xml to represent SLES 16.0 Minimal VM for x86_64.

• New combustion script data/virt_autotest/guest_unattended_installation_files/combustion_script_all_round to perform all necessary tasks, including adding user, setting passwords, adding ssh public keys, starting services, doing registration and etc, in order to have a fully up and running system. This is useful especially when ignition does not work very well.

• Use ##Authorized-Keys## and ##FQDN## in data/virt_autotest/guest_unattended_installation_files/combustion_script_all_round.

• Introduce new test suite level setting UNIFIED_GUEST_BUILDS for unified guest installation because SLES 16.0 Minimal VM may have different build than agama installer.

• Update virtualization server patterns for SLES 16.0.

• Exclude 127.0.0.0/8 subnet from being scanned in data/virt_autotest/virt_logs_collector.sh and data/virt_autotest/fetch_logs_from_guest.sh.

• Add logs saving in emergency shell when guest fails to boot up and enters into emergency mode.

• Verification Runs:

  • sle micro on sle micro
  • sles on sle micro
  • uefi sles15sp7 on sles12sp5 kvm
  • uefi sles15sp7 on sles12sp5 xen
  • uefi sles12sp5 on sles15sp7 xen
  • sles 16 Minimal VM on sles 16 with metal firstboot provision
  • sles 16 Minimal VM on sles 16 with qemu firstboot provision
  • sles 16 Minimal VM fails to boot up
  • sles15sp7 on sles15sp7 xen
  • sles15sp7 on sles15sp6 kvm