[FIX] Travis: Add account for test.wiki(data/pedia)

This account is required to do tests on wikidata introduced in
c07c8da00cef8e189762ccf4f46422f6bb6f5d5f borrowed from
I1e1ce836f35acb270c78331f1ec9c57f8ce4c0e2.

Change-Id: Ief9c3e60e4e31e38ef149c97e8a72c55fc5eb273