Release 1.3.0 of stackhpc.linux fixes configuration of kernel parameters
for IOMMU when the GRUB_CMDLINE_LINUX_DEFAULT variable is absent from
/etc/default/grub.

Include a release note about a notable change in the sriov role.

[1] https://github.com/stackhpc/ansible-collection-linux/releases/tag/v1.3.0

Change-Id: I43295cd21fc4947fa877aa242070e3c132532fab
Closes-Bug: #2083874