Exit if the gpg key cannot be split

src/freedombone

   if [[ $ENABLE_SOCIAL_KEY_MANAGEMENT == "yes" ]]; then
       echo 'Splitting GPG key. You may need to enter your passphrase.'
       freedombone-splitkey -u $MY_USERNAME -e $MY_EMAIL_ADDRESS
+      if [ ! -d /home/$MY_USERNAME/.gnupg_fragments ]; then
+          echo 'Yhe GPG key could not be split'
+          exit 86548
+      fi
   fi
 }