This bug was fixed in the package cloud-initramfs-tools - 0.36ubuntu1
--------------- cloud-initramfs-tools (0.36ubuntu1) artful; urgency=medium
* cloud-initramfs-rooturl: add squashfs module to initramfs via manual_add_modules (LP: #1689642).
-- Scott Moser <email address hidden> Tue, 09 May 2017 16:12:35 -0400
This bug was fixed in the package cloud-initramfs -tools - 0.36ubuntu1
--------------- -tools (0.36ubuntu1) artful; urgency=medium
cloud-initramfs
* cloud-initramfs -rooturl: add squashfs module to initramfs
via manual_add_modules (LP: #1689642).
-- Scott Moser <email address hidden> Tue, 09 May 2017 16:12:35 -0400