Could not expand event when adding user which contains exclamation sign in the password

Issue

• The following error occurs when trying to add a user account which has an exclamation sign in the password:

Steps to replicate:

1. Login to Karaf shell ./bin/client - u admin
2. jaas:useradd test hello!world

[ERROR] Could not expand event
java.lang.IllegalArgumentException: !world: event not found
        at jline.console.ConsoleReader.expandEvents(ConsoleReader.java:779)
        at jline.console.ConsoleReader.finishBuffer(ConsoleReader.java:631)
        at jline.console.ConsoleReader.accept(ConsoleReader.java:2019)
        at jline.console.ConsoleReader.readLine(ConsoleReader.java:2666)
        at jline.console.ConsoleReader.readLine(ConsoleReader.java:2269)
        at org.apache.karaf.shell.console.jline.Console.readAndParseCommand(Console.java:270)
        at org.apache.karaf.shell.console.jline.Console.run(Console.java:193)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1.runConsole(ShellFactoryImpl.java:173)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1$1.run(ShellFactoryImpl.java:125)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.karaf.jaas.modules.JaasHelper.doAs(JaasHelper.java:47)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1.run(ShellFactoryImpl.java:123)