/usr/share/pyshared/provisioningserver/pxe/config.local.i386.template is in python-maas-provisioningserver 1.2+bzr1373+dfsg-0ubuntu1~12.04.6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | DEFAULT local
LABEL local
SAY Booting local disk ...
KERNEL chain.c32
|