Since commit b0e450aa85 ("pasta: Detach mount namespace, (re)mount
procfs before spawning command"), we need to explicitly permit mount
of /proc, and access to entries under /proc/PID/net (after remount,
that's what AppArmor sees as path).
Fixes: b0e450aa85 ("pasta: Detach mount namespace, (re)mount procfs before spawning command")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>