NSHM Unit tests

When running NSHM unit tests in pipeline, instead of running the hazard calculation in the junit test itself the hazard calculation is done by running a java class and writing out the results to JSON files.

.gitlab-ci.yml

@@ -239,9 +239,7 @@ NSHM Tests:
       - CMD: testConus2023
       - CMD: testHawaii2021
   script:
-    - yum install procps -y
-    - memory="$(free -g | awk '/^Mem:/{print $2}')";
-    - export CI_RUNNER_MEMORY="$(printf "%.f" "$(echo "${memory} * 0.90" | bc)")g";
+    - export CI_RUNNER_MEMORY="$(awk '/MemTotal/ {printf( "%d\n", $2 / 1024 / 1024 * .90 )}' /proc/meminfo)"
     - echo "${CI_RUNNER_MEMORY}"
     - ./gradlew ${CMD}
     - cat ${JACOCO_HTML_DIR}/index.html