ras-record: Create RASSTATEDIR at runtime instead of install time

ras-record: Create RASSTATEDIR at runtime instead of install time

Package managers such as Nix and Guix force installation into an
isolated directory hierarchy. Furthermore, said hierarchy becomes
readonly after the install has completed, rendering any
<hierarchy>/var/lib/rasdaemon/ directory effectively useless.

In addition to being standard practice, creating RASSTATEDIR when
necessary at runtime fixes the above use cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>