Update CI scripts

Synced from ndn-tools

Change-Id: I1faf341ab032a2e5ca2a70e2c1142379581fba34
diff --git a/.jenkins.d/30-coverage.sh b/.jenkins.d/30-coverage.sh
index e629e83..92a9ceb 100755
--- a/.jenkins.d/30-coverage.sh
+++ b/.jenkins.d/30-coverage.sh
@@ -9,12 +9,28 @@
 if [[ $JOB_NAME == *"code-coverage" ]]; then
     gcovr --object-directory=build \
           --output=build/coverage.xml \
-          --exclude="$PWD/(tests)" \
+          --exclude="$PWD/tests" \
           --root=. \
           --xml
 
-    # # Generate also a detailed HTML output, but using lcov (slower, but better results)
-    lcov -q -c -d . --no-external -o build/coverage-with-tests.info --rc lcov_branch_coverage=1
-    lcov -q -r build/coverage-with-tests.info "$PWD/tests/*" -o build/coverage.info --rc lcov_branch_coverage=1
-    genhtml build/coverage.info --output-directory build/coverage --legend --rc genhtml_branch_coverage=1
+    # Generate also a detailed HTML output, but using lcov (better results)
+    lcov --quiet \
+         --capture \
+         --directory . \
+         --no-external \
+         --rc lcov_branch_coverage=1 \
+         --output-file build/coverage-with-tests.info
+
+    lcov --quiet \
+         --remove build/coverage-with-tests.info "$PWD/tests/*" \
+         --rc lcov_branch_coverage=1 \
+         --output-file build/coverage.info
+
+    genhtml --branch-coverage \
+            --demangle-cpp \
+            --frames \
+            --legend \
+            --output-directory build/coverage \
+            --title "ndncert unit tests" \
+            build/coverage.info
 fi