dracut/adduser.sh: change shell to bash for the live user.

dracut/adduser.sh

@@ -12,7 +12,7 @@ echo "USERNAME=$USERNAME" >> ${NEWROOT}/etc/default/live.conf
 chmod 644 ${NEWROOT}/etc/default/live.conf
 
 # Create new user and remove password. We'll use autologin by default.
-chroot ${NEWROOT} useradd -c $USERNAME -m $USERNAME -G systemd-journal,wheel -s /bin/sh
+chroot ${NEWROOT} useradd -c $USERNAME -m $USERNAME -G systemd-journal,wheel -s /bin/bash
 chroot ${NEWROOT} passwd -d $USERNAME 2>&1 >/dev/null
 
 # Enable sudo permission by default.