Remove support for InitCommand outside REPL

In this commit we retain "init" as a command inside the ShellCommand
but not on the bash command line.

Seems to have an impact on performance so relevant to gh-212.

spring-boot-cli/src/main/java/org/springframework/boot/cli/SpringCli.java

@@ -24,10 +24,10 @@ import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.ServiceLoader;
 import java.util.Set;
 
 import org.springframework.boot.cli.command.AbstractCommand;
-import org.springframework.boot.cli.command.InitCommand;
 
 /**
  * Spring Command Line Interface. This is the main entry-point for the Spring command line
@@ -54,28 +54,20 @@ public class SpringCli {
 
 	private String displayName = CLI_APP + " ";
 
-	private InitCommand init;
-
 	private Map<String, Command> commandMap = new HashMap<String, Command>();
 
 	/**
 	 * Create a new {@link SpringCli} implementation with the default set of commands.
 	 */
 	public SpringCli(String... args) {
-		try {
-			this.init = new InitCommand(this);
-			this.init.run(args);
-		}
-		catch (Exception e) {
-			throw new IllegalStateException("Cannot init with those args", e);
+		for (CommandFactory factory : ServiceLoader.load(CommandFactory.class)) {
+			for (Command command : factory.getCommands(this)) {
+				register(command);
+			}
 		}
 		addBaseCommands();
 	}
 
-	public InitCommand getInitCommand() {
-		return this.init;
-	}
-
 	/**
 	 * Set the command available to the CLI. Primarily used to support testing. NOTE: The
 	 * 'help' command will be automatically provided in addition to this list.

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/InitCommand.java

@@ -154,7 +154,7 @@ public class InitCommand extends OptionParsingCommand {
 				enhanced = true;
 			}
 
-			if (this.cli.getCommands().isEmpty() || enhanced) {
+			if (enhanced) {
 
 				for (CommandFactory factory : ServiceLoader.load(CommandFactory.class,
 						loader)) {

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/ShellCommand.java

@@ -99,7 +99,7 @@ public class ShellCommand extends AbstractCommand {
 
 		PromptCommand prompt = new PromptCommand(this);
 		cli.register(prompt);
-		cli.register(cli.getInitCommand());
+		cli.register(new InitCommand(cli));
 	}
 
 	private ConsoleReader createConsoleReader() throws IOException {