check the block_device_allocate_retries

we need to check the value of the configuration item
block_device_allocate_retries in order to ensure to
retry at least once,done like that configuration
item network_allocate_retries

Change-Id: Ia5b65bd160cb4e740d21c1b51d234e14e33135e7
Closes-Bug:#1363558
Merge "check the block_device_allocate_retries"