run-build-script-ci: add CI test on sdbusplus

run-unit-test-docker.sh is currently untested when making changes
to this repository.  Add a simple CI test that clones sdbusplus
and runs unit tests against it.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I8425306739b34d03076ffe4f466d38ea235223e4
diff --git a/jenkins/run-build-script-ci b/jenkins/run-build-script-ci
index d49c9c5..adfb1ce 100755
--- a/jenkins/run-build-script-ci
+++ b/jenkins/run-build-script-ci
@@ -9,9 +9,14 @@
 
 export LANG=en_US.UTF8
 
-cd "${WORKSPACE}"/openbmc-build-scripts
+cd "${WORKSPACE}/openbmc-build-scripts"
 
 # Now run some of our most used CI scripts
 ./scripts/build-unit-test-docker
 ./scripts/clean-unit-test-docker
 ./scripts/build-qemu-robot-docker.sh
+
+# Run a simple CI against 'sdbusplus' to ensure the run-unit-test script works.
+cd "${WORKSPACE}"
+git clone https://github.com/openbmc/sdbusplus
+UNIT_TEST_PKG=sdbusplus "${WORKSPACE}/openbmc-build-scripts/run-unit-test-docker.sh"