4260. [security] Insufficient testing when parsing a message allowed

records with an incorrect class to be be accepted,
                        triggering a REQUIRE failure when those records
                        were subsequently cached. (CVE-2015-8000) [RT #4098]

(cherry picked from commit c8821d124c)

bin/tests/system/conf.sh.in

@@ -103,6 +103,8 @@ else
 	TESTSOCK6=false
 fi
 
+PYTHON=@PYTHON@
+
 #
 # Determine if we support various optional features.
 #
@@ -115,4 +117,4 @@ ZLIB=@ZLIB@
 
 export NAMED LWRESD DIG NSUPDATE KEYGEN KEYFRLAB SIGNER KEYSIGNER KEYSETTOOL \
        PERL SUBDIRS RNDC CHECKZONE PK11GEN PK11LIST PK11DEL TESTSOCK6 \
-       JOURNALPRINT ARPANAME RESOLVE RRCHECKER NSLOOKUP DESCRIPTION
+       JOURNALPRINT ARPANAME RESOLVE RRCHECKER NSLOOKUP DESCRIPTION PYTHON