FIX-#1700: Fix metadata for concat and mask when `axis=1`#1797

Merged

aregm merged 1 commit intomodin-project:masterfrom devin-petersohn:bugs/1700

Jul 24, 2020

+19-5

Commits on Jul 24, 2020

FIX-modin-project#1700 : Fix metadata for concat and mask when axis=1
devin-petersohn
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