auth: Unset _JAVA_OPTIONS before using jdnssec

Travis now [1] defaults to _JAVA_OPTIONS="-Xmx2048m -Xms512m". We wouldn't
care much, except that every Java command now outputs the following line
to stderr, breaking our jdnssec diffs:

"Picked up _JAVA_OPTIONS: -Xmx2048m -Xms512m"

[1]: https://docs.travis-ci.com/user/build-environment-updates/2017-09-06/

diff --git a/regression-tests/runtests b/regression-tests/runtests
index b701dee74315e9c6ae0ee19a8ca3283171daa83f..8130f88ef349ad7ee9a603394cb93a683fe2af2d 100755 (executable)
--- a/regression-tests/runtests
+++ b/regression-tests/runtests
@@ -16,6 +16,8 @@ export ZONE2LDAP=${ZONE2LDAP:-${PWD}/../pdns/zone2ldap}
 export PDNSUTIL=${PDNSUTIL:-${PWD}/../pdns/pdnsutil}
 export PDNSCONTROL=${PDNSCONTROL:-${PWD}/../pdns/pdns_control}
 
+unset _JAVA_OPTIONS
+
 spectest=$1
 [ -z $spectest ] && spectest=""