Valgrind suppression for a leak in SoftHSM initialization
Valgrind suppression for a leak in SoftHSM initialization

This leak during SoftHSM init appeared in CI with the update from
Debian Buster to Bullseye, not sure if the cause is in SoftHSM or one
of the underlying crypto libraries.

airtower-luna/mod_gnutls,airtower-luna/mod_gnutls,airtower-luna/mod_gnutls