Add OPA v0.44.0 to vendor

vendor/github.com/agnivade/levenshtein/.gitignore

vendor/github.com/agnivade/levenshtein/.travis.yml

vendor/github.com/agnivade/levenshtein/License.txt

vendor/github.com/agnivade/levenshtein/Makefile

vendor/github.com/agnivade/levenshtein/README.md

vendor/github.com/agnivade/levenshtein/levenshtein.go

vendor/github.com/golang/protobuf/ptypes/any.go

vendor/github.com/golang/protobuf/ptypes/any/any.pb.go

vendor/github.com/golang/protobuf/ptypes/doc.go

vendor/github.com/golang/protobuf/ptypes/duration.go

...github.com/golang/protobuf/ptypes/duration/duration.pb.go

vendor/github.com/golang/protobuf/ptypes/timestamp.go

vendor/github.com/klauspost/compress/.gitignore

vendor/github.com/klauspost/compress/.goreleaser.yml

vendor/github.com/klauspost/compress/README.md

vendor/github.com/klauspost/compress/huff0/bitreader.go

vendor/github.com/klauspost/compress/huff0/bitwriter.go

vendor/github.com/klauspost/compress/huff0/bytereader.go

vendor/github.com/klauspost/compress/huff0/compress.go

vendor/github.com/klauspost/compress/huff0/decompress.go