ci: replace Travis with GitHub Actions

Change-Id: I6316bc7872fe25644dceafb1e2e2119c9c6e5ac3
diff --git a/.jenkins.d/30-coverage.sh b/.jenkins.d/30-coverage.sh
index 56baf77..33238e2 100755
--- a/.jenkins.d/30-coverage.sh
+++ b/.jenkins.d/30-coverage.sh
@@ -2,22 +2,19 @@
 set -ex
 
 if [[ $JOB_NAME == *"code-coverage" ]]; then
+    # Generate a detailed HTML report using lcov
     lcov --quiet \
          --capture \
          --directory . \
+         --exclude "$PWD/tests/*" \
          --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 \
             --legend \
-            --output-directory build/coverage \
+            --output-directory build/lcov \
             --title "NLSR unit tests" \
             build/coverage.info
 fi