For TLS test jobs on Ubuntu Jammy when we run
dnsmasq on the master node needed for testing
we get the error:
"failed to create inotify: Too many open files"
By default the number of inotify instances on Jammy
is 128. We increase this up to 256.
Change-Id: I07c8a0f909608b6e44040ffeefc6ab576236c93f