Fix: Show placeholder state when Slurm is not reachable

3 jobs for 18-hemera-tagged-job-doesn-t-start in 1 minute and 51 seconds
Name Stage Failure
test_program Test
Output from these tests are in: /builds/fwcc/gitlab-hpc-driver/build/Testing/Temporary/LastTest.log
Use "--rerun-failed --output-on-failure" to re-run the failed cases verbosely.
make[4]: *** [Makefile:136: test] Error 8
make[3]: *** [tests/CMakeFiles/coverage.dir/build.make:74: tests/CMakeFiles/coverage] Error 2
make[2]: *** [CMakeFiles/Makefile2:143: tests/CMakeFiles/coverage.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:150: tests/CMakeFiles/coverage.dir/rule] Error 2
make: *** [Makefile:192: coverage] Error 2
Cleaning up file based variables
ERROR: Job failed: exit code 1