Fix CentOS 5.9 templates with backports of version 5.10 templates

Due to numerous bugs in the templates and the relocation to the CentOS
vault, the previous CentOS 5.9 templates failed to create VM images.
This commit replaces the previous templates with backports of the CentOS
5.10 templates. All templates now point to vault locations for both ISO
images and package repositories.

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>