Lustre startup script - Remove duplicate code (#440)
Lustre startup script - Remove duplicate code (#440)

* remove duplicate code 

remove the duplicate code for check disk because is easier to read.

* Remove duplicate code to check disks

Remove duplicate code to check disks because is easier to read the code.

GoogleCloudPlatform/deploymentmanager-samples,GoogleCloudPlatform/deploymentmanager-samples,GoogleCloudPlatform/deploymentmanager-samples