Correct configuration setting using NUMBER_FAKE_NOVA_COMPUTE

In Change-Id Ia3843818014f7c6c7526ef3aa9676bbddb8a85ca the 'host'
setting used for each of the fake compute hosts was accidentally named
'nhost' ('\nhost' was edited poorly), so the setting doesn't actually do
anything: you create multiple nova-compute processes they think they are
all on the same host and only one hypervisor and resource provider is
created.

With the correction in place, the wait_for_compute function needs to be
updated to be aware of the fact that the hostnames on the compute
services will have a numeric prefix when the fake virt driver is used.

Change-Id: I5e8430d170c0b1c4f195ebe510aff8be59e4a3bc
diff --git a/functions b/functions
index 959133c..eabe249 100644
--- a/functions
+++ b/functions
@@ -446,7 +446,12 @@
         ID=""
         while [[ "\$ID" == "" ]]; do
             sleep 1
-            ID=\$(openstack --os-cloud devstack-admin --os-region "$REGION_NAME" compute service list --host `hostname` --service nova-compute -c ID -f value)
+            if [[ "$VIRT_DRIVER" = 'fake' ]]; then
+                # When using the fake driver the compute hostnames have a suffix of 1 to NUMBER_FAKE_NOVA_COMPUTE
+                ID=\$(openstack --os-cloud devstack-admin --os-region "$REGION_NAME" compute service list --host `hostname`1 --service nova-compute -c ID -f value)
+            else
+                ID=\$(openstack --os-cloud devstack-admin --os-region "$REGION_NAME" compute service list --host `hostname` --service nova-compute -c ID -f value)
+            fi
         done
 EOF
     time_stop "wait_for_service"