x64: Move pvclock-abi.cc under arch directory

pvclock is x86-64 specific, move it under arch/x64.

Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
release-ec2: update template AMIs

Due to deletion of old releases changing template AMI IDs to v0.09

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>