Update oslo-incubator middleware.base module

Changes -
 * Trivial: Make vertical white space after license header consistent

Change-Id: Ibc5115b06e9b7d844158d777aeb6ddc424141af5
Update oslo-incubator py3kcompat module

Changes -
 * Add method quote_plus in module py3kcompat.urlutils

Change-Id: I1352bf8d4a2a5fe064a793168b83adf677e75298
Merge "Update oslo-incubator middleware.base module"
Merge "Update oslo-incubator py3kcompat module"