TT#56376 Restore exit code propogation in t/selenium/testrunner

Jenkins uses wrapper jenkins_docker_run which will mask exit code
anyway and this is what we want currently:
we need always zero exit code here on Jenkins.

Jenkins will detect errors in produced artifacts (XML files) if any
as a result the Jenkins job will be "yellow" instead of "red".

Change-Id: I249fcde9103ee25e6798fcb835ee4a408f8f0f57

t/selenium/jenkins_docker_run

@@ -1,4 +1,12 @@
 #!/bin/bash
 # This script is used for running the tests with
 # proper arguments from Jenkins under user 'selenium'
-su - selenium -c "cd /code && ./t/selenium/testrunner $*"
+
+set -e
+
+su - selenium -c "cd /code && ./t/selenium/testrunner $*" || RC=$?
+
+## Jenkins will detect errors in produced artifacts if any
+## as a result the Jenkins job will be "yellow" instead of "red".
+[ -n "${RC}" ] && echo "Masking non-zero exit code '${RC}'"
+exit 0 # ${RC:-0}

t/selenium/testrunner

@@ -56,6 +56,7 @@ echo "Selenium server log file available at /home/selenium/selenium.log"
 echo "Watch at test runs by connecting via VNC (password: '${PASSWORD}'):"
 echo "echo -e '$PASSWORD_ENCODED' >/tmp/vncpasswd ; vncviewer geometry=1280x1024x16 passwd=/tmp/vncpasswd localhost:5999"
 
+RC=0
 export CATALYST_SERVER="https://${SERVER}:1443"
 if [ "${OUTPUT_TYPE:-}" = "junit" ] ; then
   prove -ofvm --formatter TAP::Formatter::JUnit -l -It/lib "${TEST_PLAN[@]}" | \
@@ -65,13 +66,11 @@ else
   prove -ofv --color -l -It/lib "${TEST_PLAN[@]}" || RC=$?
 fi
 
-echo "Finished test execution, test execution returned with exit code ${RC:-0}."
+echo "Finished test execution, test execution returned with exit code ${RC}."
 if [ -f "${OUTPUT_DIRECTORY}/selenium.xml" ] ; then
   echo "Test results available at '${OUTPUT_DIRECTORY}/selenium.xml'"
 fi
 
 echo "################################################################################"
 
-## exit cleanly here, Jenkins will detect errors in produced artifacts if any
-## as a result the Jenkins job will be "yellow" instead of "red".
-# exit "${RC}"
+exit "${RC}"