DRY up rake task run_task spec helper
DRY up rake task run_task spec helper

Change-Id: I638ba38810c47998fdb31f92cf1fc6d667723e77
Reviewed-on: http://gerrit.causes.com/45713
Tested-by: jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@brigade.com>
Reviewed-by: Shane da Silva <67fb7bfe39f841b16a1f86d3928acc568d12c716@brigade.com>

skateman/haml-lint,mzp/haml-lint