qemu: tpm: Conditionally create storage on incoming migration
qemu: tpm: Conditionally create storage on incoming migration

Do not create storage if the TPM state files are on shared storage and
there's an incoming migration since in this case the storage directory
must already exist. Also do not run swtpm_setup in this case.

Signed-off-by: Stefan Berger <5c96973112e540fb909b13997fcd087e5bfbee96@linux.ibm.com>
Reviewed-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>

jfehlig/libvirt,jfehlig/libvirt,zippy2/libvirt,jfehlig/libvirt,zippy2/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,olafhering/libvirt,jfehlig/libvirt,libvirt/libvirt,libvirt/libvirt,olafhering/libvirt,olafhering/libvirt,libvirt/libvirt,zippy2/libvirt