Description of problem:

Creating a new product by limited permissions user fails  with error "NoMethodError: undefined method `[]' for nil:NilClass"

The user has been assigned to a custom role with the following filter :

Resource			Permissions			Search	
	
Product and Repositories	export_products, 		N/A
				sync_products, 
				destroy_products, 
				edit_products, 
				create_products,
				view_products

The product is created even with the error on step "Actions::Katello::Product::ReindexSubscriptions" and the task becomes on paused state and the product can not be deleted until cleaning up the task.

The product is successfully created with no errors when the following filter is added to the role:

Resource	Permissions	
Subscription	view_subscriptions

Version-Release number of selected component (if applicable):

Red Hat satellite 6.4.4-2


How reproducible:

100%

Steps to Reproduce:

1.Create a role ROLE1 with the following filters :

Resource			Permissions			Search	
	
Product and Repositories	export_products, 		N/A
				sync_products, 
				destroy_products, 
				edit_products, 
				create_products,
				view_products


2. Create a new user and assign ROLE1 to it.

3.Login using the new user and try to create a new product.


Actual results:

The product is created but with the following error and the task becomes on paused state.

An error occurred while saving the Product: 0 Task XXXXX: NoMethodError: undefined method `[]' for nil:NilClass

Expected results:
If a subscription permission is needed , the product creation task can not be started or exit with clear error.

Additional info:

The product is successfully created with no errors when the following filter is added to the role:

Resource	Permissions	
Subscription	view_subscriptions