ci: Fix unit test execution with boost 1.60

Change-Id: I461e634e5cdf022fed76ca6b92759b18b1d4aed6
Refs: #3417
diff --git a/.jenkins.d/20-tests.sh b/.jenkins.d/20-tests.sh
index dcd2b9d..f12ee59 100755
--- a/.jenkins.d/20-tests.sh
+++ b/.jenkins.d/20-tests.sh
@@ -25,12 +25,12 @@
 # Run unit tests
 # Core
 if [[ -n $XUNIT ]]; then
-  ./build/unit-tests-core -l all --log_format2=XML --log_sink2=build/xunit-core-report.xml
-  sudo ./build/unit-tests-core -t TestPrivilegeHelper -l all --log_format2=XML --log_sink2=build/xunit-core-sudo-report.xml
+  ./build/unit-tests-core -l all -- --log_format2=XML --log_sink2=build/xunit-core-report.xml
+  sudo ./build/unit-tests-core -t TestPrivilegeHelper -l all -- --log_format2=XML --log_sink2=build/xunit-core-sudo-report.xml
 
-  ./build/unit-tests-daemon -l all --log_format2=XML --log_sink2=build/xunit-daemon-report.xml
+  ./build/unit-tests-daemon -l all -- --log_format2=XML --log_sink2=build/xunit-daemon-report.xml
 
-  ./build/unit-tests-rib -l all --log_format2=XML --log_sink2=build/xunit-rib-report.xml
+  ./build/unit-tests-rib -l all -- --log_format2=XML --log_sink2=build/xunit-rib-report.xml
 else
   ./build/unit-tests-core -l test_suite
   sudo ./build/unit-tests-core -t TestPrivilegeHelper -l test_suite