Add xunit support to make-unit-test for openolt

Increase executor size for openolt tests

Change-Id: I9aa35f35bd7210ce3f05ad06590007f72b3528ed
diff --git a/jjb/verify/openolt.yaml b/jjb/verify/openolt.yaml
index 7b4eac8..91159f6 100644
--- a/jjb/verify/openolt.yaml
+++ b/jjb/verify/openolt.yaml
@@ -15,7 +15,11 @@
       - 'verify-licensed'
       - 'tag-collision-reject'
       - 'make-unit-test':
+          build-node: 'ubuntu16.04-basebuild-2c-4g'
           unit-test-targets: 'test'
+          # openolt uses gtest which outputs in xunit format
+          junit-allow-empty-results: true
+          xunit-skip-if-no-test-files: false
 
 # This and the job-template below were written in October 2018
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