gocd-server: add startupOptions, empty extraOptions

The extraOptions option has default values which seems surprising.  This
moves those values to startupOptions (which is what gocd-agent uses) and
empties out the default extraOptions.

The gocd-agent startupOptions description was also changed to remove the
mention of the example (given there isn't one).

nixos/modules/services/continuous-integration/gocd-agent/default.nix

@@ -98,7 +98,7 @@ in {
         ];
         description = ''
           Specifies startup command line arguments to pass to Go.CD agent
-          java process.  Example contains debug and gcLog arguments.
+          java process.
         '';
       };
 

nixos/modules/services/continuous-integration/gocd-server/default.nix

@@ -90,7 +90,7 @@ in {
         '';
       };
 
-      extraOptions = mkOption {
+      startupOptions = mkOption {
         default = [
           "-Xms${cfg.initialJavaHeapSize}"
           "-Xmx${cfg.maxJavaHeapMemory}"
@@ -103,6 +103,15 @@ in {
           "-Dcruise.server.port=${toString cfg.port}"
           "-Dcruise.server.ssl.port=${toString cfg.sslPort}"
         ];
+
+        description = ''
+          Specifies startup command line arguments to pass to Go.CD server
+          java process.
+        '';
+      };
+
+      extraOptions = mkOption {
+        default = [ ];
         example = [ 
           "-X debug" 
           "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005"
@@ -169,7 +178,8 @@ in {
 
       script = ''
         ${pkgs.git}/bin/git config --global --add http.sslCAinfo /etc/ssl/certs/ca-certificates.crt
-        ${pkgs.jre}/bin/java -server ${concatStringsSep " " cfg.extraOptions} \
+        ${pkgs.jre}/bin/java -server ${concatStringsSep " " cfg.startupOptions} \
+                               ${concatStringsSep " " cfg.extraOptions}  \
                               -jar ${pkgs.gocd-server}/go-server/go.jar
       '';