add go mod

pkg/mod/cache/download/github.com/stretchr/testify/@v/v1.7.0.info

+{"Version":"v1.7.0","Time":"2021-01-13T09:54:11Z"}
\ No newline at end of file

pkg/mod/cache/download/github.com/stretchr/testify/@v/v1.7.0.mod

+module github.com/stretchr/testify
+
+go 1.13
+
+require (
+	github.com/davecgh/go-spew v1.1.0
+	github.com/pmezard/go-difflib v1.0.0
+	github.com/stretchr/objx v0.1.0
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
+)

pkg/mod/cache/download/github.com/stretchr/testify/@v/v1.7.0.ziphash

+h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
\ No newline at end of file

pkg/mod/cache/download/go.opentelemetry.io/proto/otlp/@v/list

+v0.7.0

pkg/mod/cache/download/go.opentelemetry.io/proto/otlp/@v/v0.7.0.info

+{"Version":"v0.7.0","Time":"2021-03-04T19:30:05Z"}
\ No newline at end of file

pkg/mod/cache/download/go.opentelemetry.io/proto/otlp/@v/v0.7.0.mod

+module go.opentelemetry.io/proto/otlp
+
+go 1.15
+
+require (
+	github.com/golang/protobuf v1.4.3
+	github.com/grpc-ecosystem/grpc-gateway v1.16.0
+	google.golang.org/grpc v1.36.0
+	google.golang.org/protobuf v1.25.0
+)

pkg/mod/cache/download/go.opentelemetry.io/proto/otlp/@v/v0.7.0.ziphash

+h1:rwOQPCuKAKmwGKq2aVNnYIibI6wnV7EvzgfTCzcdGg8=
\ No newline at end of file

pkg/mod/cache/download/golang.org/x/crypto/@v/list

+v0.0.0-20190308221718-c2843e01d9a2
+v0.0.0-20200622213623-75b288015ac9

pkg/mod/cache/download/golang.org/x/crypto/@v/v0.0.0-20190308221718-c2843e01d9a2.mod

+module golang.org/x/crypto
+
+require golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a

pkg/mod/cache/download/golang.org/x/crypto/@v/v0.0.0-20200622213623-75b288015ac9.info

+{"Version":"v0.0.0-20200622213623-75b288015ac9","Time":"2020-06-22T21:36:23Z"}
\ No newline at end of file

pkg/mod/cache/download/golang.org/x/crypto/@v/v0.0.0-20200622213623-75b288015ac9.mod

+module golang.org/x/crypto
+
+go 1.11
+
+require (
+	golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3
+	golang.org/x/sys v0.0.0-20190412213103-97732733099d
+)

pkg/mod/cache/download/golang.org/x/crypto/@v/v0.0.0-20200622213623-75b288015ac9.ziphash

+h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
\ No newline at end of file