Reorder the script number of 'elements/dkms/post-install.d/99-dkms'
to 'elements/dkms/post-install.d/97-dkms' to ensure that
it will always get executed before the
'elements/ramdisk/post-install.d/99-build-ramdisk'. This
would make sure that the DKMS module is there in the ramdisk.
Closes bug: #1492904
Change-Id: I2145d0ac29646335f76745a7678d169a62f13d44