chain credentials providers together with or_else() so it returns at the first Ok() result
chain credentials providers together with or_else() so it returns at the first Ok() result

mattico/rusoto,indiv0/rusoto,mattico/rusoto,noggleboggle/rusoto,ford-prefect/rusoto,rusoto/rusoto,DualSpark/rust-aws,DualSpark/rusoto,DualSpark/rust-aws,ford-prefect/rusoto,mthjones/rusoto,rusoto/rusoto,DualSpark/rusoto,cmsd2/rusoto,SecurityInsanity/rusoto,DualSpark/rusoto,rusoto/rusoto,DualSpark/rust-aws,mattico/rusoto,mthjones/rusoto,SecurityInsanity/rusoto