Fail bootstrap_admin_node if admin password is wrong

This covers the scenario where a user changes the admin password,
but fails to update /etc/fuel/astute.yaml and
/root/.config/fuel/fuel_client.yaml. These files need to be
updated to re-run bootstrap_admin_node for simple patching.

This fix is partial because it should include string updates
in fuel-ui, docs, and fuelclient.

Change-Id: I23f362524eab9649b58a8ba722e6fd6cb1d6b1ab
Partial-Bug: #1555262

iso/bootstrap_admin_node.sh

@@ -100,7 +100,9 @@ https://docs.mirantis.com/openstack/fuel/fuel-${FUEL_RELEASE}/\
 release-notes.html#maintenance-updates"
 fuelmenu_fail_message="Fuelmenu was not able to generate '/etc/fuel/astute.yaml' file! \
 Please, restart it manualy using 'fuelmenu' command."
-
+fuelclient_fail_message="Fuel CLI credentials are invalid. Update \
+/etc/fuel/astute.yaml FUEL_ACCESS/password and ~/.config/fuel/fuel_client.yaml\
+ in order to proceed with deployment."
 function countdown() {
   local i
   sleep 1
@@ -500,6 +502,13 @@ if [ ${old_sysctl_vm_value} -lt 65535 ]; then
   sysctl -w vm.min_free_kbytes=${old_sysctl_vm_value}
 fi
 
+# Ensure fuelclient can authenticate
+output=$(fuel token 2>&1)
+if echo "$output" | grep -q "Unauthorized"; then
+  echo $fuelclient_fail_message
+  fail
+fi
+
 # apply puppet
 /etc/puppet/modules/fuel/examples/deploy.sh
 if [[ $? -ne 0 ]]; then