Minor tweaks for XHPAST config
Minor tweaks for XHPAST config

Summary: Ref T2039. The type specs are right in theory but not quite correct in practice, since we pass strings in rather than objects.

Test Plan: While tweaking `phabricator/`, adjusted these to get desirable results.

Reviewers: btrahan, joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Maniphest Tasks: T2039

Differential Revision: https://secure.phabricator.com/D9071

wikimedia/phabricator-arcanist,calblueprint/arcanist,Khan/arcanist,zhihu/arcanist,dguo-coursera/arcanist,codelabs-ch/arcanist,aik099/arcanist,hach-que/arcanist,phacility/arcanist,Khan/arcanist,Khan/arcanist,alexmv/arcanist,eSpark/arcanist,haskell-infra/arcanist,hach-que/arcanist,coursera/arcanist,zhihu/arcanist,Symplicity/arcanist,calblueprint/arcanist,haskell-infra/arcanist,memsql/arcanist,fivestars/arcanist,KieranHayes/arcanist,wikimedia/phabricator-arcanist,fivestars/arcanist,dguo-coursera/arcanist,r4nt/arcanist,kevinseelbach/arcanist,sneakpeeq/arcanist,chundongwang/arcanist,fivestars/arcanist,Khan/arcanist,dguo-coursera/arcanist,chundongwang/arcanist,PageUpPeopleOrg/arcanist-patches,folsom-labs/arcanist,kevinseelbach/arcanist,coursera/arcanist,r4nt/arcanist,zhihu/arcanist,fivestars/arcanist,hach-que/arcanist,alexmv/arcanist,PageUpPeopleOrg/arcanist-patches,sneakpeeq/arcanist,haskell-infra/arcanist,wikimedia/phabricator-arcanist,phacility/arcanist,sneakpeeq/arcanist,coursera/arcanist,eSpark/arcanist,jra3/arcanist,kevinseelbach/arcanist,calblueprint/arcanist,codelabs-ch/arcanist,Symplicity/arcanist,haskell-infra/arcanist,wharris/arcanist,PageUpPeopleOrg/arcanist-patches,uber/arcanist,memsql/arcanist,sneakpeeq/arcanist,aik099/arcanist,Symplicity/arcanist,wharris/arcanist,chundongwang/arcanist,Symplicity/arcanist,coursera/arcanist,chundongwang/arcanist,KieranHayes/arcanist,r4nt/arcanist,wharris/arcanist,wxstars/arcanist,wxstars/arcanist,KieranHayes/arcanist,jra3/arcanist,wxstars/arcanist,codelabs-ch/arcanist,wikimedia/phabricator-arcanist,phacility/arcanist,dguo-coursera/arcanist,r4nt/arcanist,calblueprint/arcanist,folsom-labs/arcanist,memsql/arcanist,phacility/arcanist,jra3/arcanist,KieranHayes/arcanist,uber/arcanist,alexmv/arcanist,jra3/arcanist,phacility/arcanist,codelabs-ch/arcanist,eSpark/arcanist,uber/arcanist,codelabs-ch/arcanist,zhihu/arcanist,wxstars/arcanist,kevinseelbach/arcanist,folsom-labs/arcanist,hach-que/arcanist,PageUpPeopleOrg/arcanist-patches,wharris/arcanist,alexmv/arcanist,memsql/arcanist,aik099/arcanist,aik099/arcanist,eSpark/arcanist,folsom-labs/arcanist,uber/arcanist