Parametrize block_device_creation_timeout at compute
diff --git a/nova/files/ocata/nova-compute.conf.Debian b/nova/files/ocata/nova-compute.conf.Debian
index 42d913b..2e1f9d4 100644
--- a/nova/files/ocata/nova-compute.conf.Debian
+++ b/nova/files/ocata/nova-compute.conf.Debian
@@ -10520,6 +10520,9 @@
# Time in secs to wait for a block device to be created (integer value)
# Minimum value: 1
#block_device_creation_timeout=10
+{%- if compute.block_device_creation_timeout is defined %}
+block_device_creation_timeout = {{ compute.block_device_creation_timeout }}
+{%- else %}
#
# Maximum size in bytes of kernel or ramdisk images.