Allowing null in description field

Few project templates (e.g. QA) does not require the description fields so we are now getting null description field for projects.

Author: vikasrohit

src/services/ProcessorService.js

@@ -490,7 +490,7 @@ processCreate.schema = {
       resource: joi.string().required(),
       id: joi.numberId(),
       name: joi.string().max(200).required(),
-      description: joi.string().max(10000).allow('').required(),
+      description: joi.string().max(10000).allow('').allow(null).required(),
       directProjectId: joi.optionalNumberId().allow(null),
       billingAccountId: joi.optionalNumberId().allow(null),
       type: joi.string().max(45).required(),