Services: Unbound DNS - fix "configctl unbound check" as it doesn't use a chroot.

ref: https://forum.opnsense.org/index.php?topic=49989.0

Author: AdSchellevis

src/opnsense/scripts/unbound-dnsbl/dnsbl_module.py

@@ -37,6 +37,7 @@
 import dns
 import dns.name
 import unboundmodule
+sys.path.insert(0, "/var/unbound/unbound-dnsbl/") # unbound-check doesn't use a chroot
 sys.path.insert(0, "/unbound-dnsbl/")
 from lib import Query, ModuleContext
 from lib.dnsbl import DNSBL