Use Zypper tools to upgrade SUSE Linux SP/patch

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1. Install zypper-miration plugs
   zypper in zypper-migration-plugin

2. make sure system is patched to current patch level
   zypper patch
3. Migrate from SP to new SP
   zypper migration

Executing 'zypper refresh'

Refreshing service 'cloud_update'.
........
All repositories have been refreshed.

Executing 'zypper --no-refresh patch-check --updatestack-only'

Loading repository data...
Reading installed packages...
0 patches needed (0 security patches)

4. Check status
   cat /etc/os-release

当前题目：HowtoupgradeSUSELinuxOS/Patch
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