Restore the system property GlassFish_Platform configuration

This avoids the threading policy from being set to USE_NO_THREADS in AppServerStartup#postConstruct()

Signed-off-by: Takahiro Nagao <[email protected]>

nucleus/core/bootstrap/src/main/java/com/sun/enterprise/glassfish/bootstrap/GlassFishMain.java

@@ -77,9 +77,13 @@ public static void main(final String[] args) {
             checkJdkVersion();
 
             final Properties argsAsProps = argsToMap(args);
-            final OsgiPlatform platform = OsgiPlatform.valueOf(whichPlatform());
+            final String platformName = whichPlatform();
+            final OsgiPlatform platform = OsgiPlatform.valueOf(platformName);
             STDOUT.println("Launching GlassFish on " + platform + " platform");
 
+            // Set the system property to allow downstream code to know the platform on which GlassFish runs.
+            System.setProperty(PLATFORM_PROPERTY_KEY, platformName);
+
             final Path instanceRoot = findInstanceRoot(installRoot, argsAsProps);
             final ServerFiles files = new ServerFiles(installRoot.toPath(), instanceRoot);
             final StartupContextCfg startupContextCfg = createStartupContextCfg(platform, files, args);