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.

gradle/nshm.gradle

@@ -91,6 +91,8 @@ task testAlaska2007(type: Test) {
     exceptionFormat "full"
   }
 
+  systemProperties(System.getProperties())
+
   useJUnitPlatform()
   jvmArgs(
       "-Xms2g",
@@ -115,6 +117,8 @@ task testAlaska2023(type: Test) {
     exceptionFormat "full"
   }
 
+  systemProperties(System.getProperties())
+
   useJUnitPlatform()
   jvmArgs(
       "-Xms2g",
@@ -139,9 +143,11 @@ task testConus2018(type: Test) {
     exceptionFormat "full"
   }
 
+  systemProperties(System.getProperties())
+
   useJUnitPlatform()
   jvmArgs(
-      "-Xms2g",
+      "-Xms${xmx}",
       "-Xmx${xmx}",
       )
 
@@ -163,6 +169,8 @@ task testConus2023(type: Test) {
     exceptionFormat "full"
   }
 
+  systemProperties(System.getProperties())
+
   useJUnitPlatform()
   jvmArgs(
       "-Xms2g",
@@ -187,6 +195,8 @@ task testHawaii2021(type: Test) {
     exceptionFormat "full"
   }
 
+  systemProperties(System.getProperties())
+
   useJUnitPlatform()
   jvmArgs(
       "-Xms2g",