various services: exit with non-zero exit code on failure

services/alarm-config-logger/src/main/java/org/phoebus/alarm/logging/AlarmConfigLoggingService.java

@@ -152,7 +152,7 @@ public static void main(String[] original_args) throws InterruptedException {
             ex.printStackTrace();
 	    System.out.println("\n>>>> Please check available arguments of alarm-config-logger as follows:");
 	    help();
-            return;
+			System.exit(-1);
         }
 
         logger.info("Alarm Logging Service (PID " + ProcessHandle.current().pid() + ")");

services/alarm-server/src/main/java/org/phoebus/applications/alarm/aggregate/AggregateTopics.java

@@ -72,6 +72,7 @@ private AggregateTopics(String[] args)
         } catch (IOException ex)
         {
             logger.log(Level.WARNING, "Reading input from stdin failed.", ex);
+			System.exit(-1);
         }
 
         // Exit the program. The shutdown hook will clean up the stream.

services/alarm-server/src/main/java/org/phoebus/applications/alarm/server/AlarmServerMain.java

@@ -121,6 +121,7 @@ private AlarmServerMain(final String server, final String config, final boolean
             }
         } catch (final Throwable ex) {
             logger.log(Level.SEVERE, "Alarm Server main loop error", ex);
+			System.exit(-1);
         }
 
         logger.info("Done.");
@@ -613,7 +614,7 @@ public static void main(final String[] original_args) throws Exception {
             help();
             System.out.println();
             ex.printStackTrace();
-            return;
+			System.exit(-1);
         }
 
         logger.info("Alarm Server (PID " + ProcessHandle.current().pid() + ")");

services/archive-engine/src/main/java/org/csstudio/archive/Engine.java

@@ -390,7 +390,7 @@ else if (cmd.equals("-steal_channels"))
             catch (Exception ex)
             {
                 logger.log(Level.SEVERE, "Cannot start", ex);
-                run = false;
+				System.exit(-1);
             }
             httpd.shutdown();
         }

services/scan-server/src/main/java/org/csstudio/scan/server/ScanServerInstance.java

@@ -246,7 +246,7 @@ else if (cmd.equals("-noshell"))
             help();
             System.out.println();
             ex.printStackTrace();
-            return;
+			System.exit(-1);
         }
 
         logger.info("Scan Server (PID " + ProcessHandle.current().pid() + ")");
@@ -283,6 +283,7 @@ else if (cmd.equals("-noshell"))
         catch (Exception ex)
         {
             logger.log(Level.SEVERE, "Cannot start", ex);
+			System.exit(-1);
         }
         httpd.shutdown();