[Fixbug: ZSTAC-27007] adapt edk2 package name
[Fixbug: ZSTAC-27007] adapt edk2 package name

The package name of edk2 of kylin v10 sp2 is edk2-ovmf, change package
name from edk2.git to edk2-ovmf

zstackio/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility