This patch fix regression caused by e87cc12e and allow
table borders rendered in the left or right page margin.

Also add another test case (testTableExtrusion2) to assure
inner table can't have wider border than outer table.

Change-Id: I7a86b379dee08fb2f23385183a42d0ebde007370
Reviewed-on: https://gerrit.libreoffice.org/54862Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mark Hung <marklh9@gmail.com>