Convert to go modules

- Use a replace to pin protobuf back to 1.3.x since the 1.4 version
gives warnings with log-cache re-registering a protofile

[#171660042](https://www.pivotaltracker.com/story/show/171660042)

Co-authored-by: Lisa Burns <lisaburns@vmware.com>
Co-authored-by: Steve Taylor <staylor@pivotal.io>

go.mod

@@ -0,0 +1,68 @@
+module code.cloudfoundry.org/cli
+
+go 1.14
+
+require (
+	code.cloudfoundry.org/bytefmt v0.0.0-20170428003108-f4415fafc561
+	code.cloudfoundry.org/cfnetworking-cli-api v0.0.0-20190103195135-4b04f26287a6
+	code.cloudfoundry.org/cli-plugin-repo v0.0.0-20200304195157-af98c4be9b85
+	code.cloudfoundry.org/cli/integration/assets/hydrabroker v0.0.0-20201002233634-81722a1144e4
+	code.cloudfoundry.org/clock v1.0.0
+	code.cloudfoundry.org/diego-ssh v0.0.0-20170109142818-18cdb3586e7f
+	code.cloudfoundry.org/go-log-cache v1.0.1-0.20200316170138-f466e0302c34
+	code.cloudfoundry.org/go-loggregator v7.4.0+incompatible
+	code.cloudfoundry.org/gofileutils v0.0.0-20170111115228-4d0c80011a0f
+	code.cloudfoundry.org/jsonry v1.1.2
+	code.cloudfoundry.org/lager v1.1.1-0.20191008172124-a9afc05ee5be
+	code.cloudfoundry.org/tlsconfig v0.0.0-20200131000646-bbe0f8da39b3
+	code.cloudfoundry.org/ykk v0.0.0-20170424192843-e4df4ce2fd4d
+	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
+	github.com/SermoDigital/jose v0.9.2-0.20161205224733-f6df55f235c2
+	github.com/apoydence/eachers v0.0.0-20181020210610-23942921fe77 // indirect
+	github.com/blang/semver v3.5.1+incompatible
+	github.com/bmatcuk/doublestar v1.3.1 // indirect
+	github.com/charlievieth/fs v0.0.0-20170613215519-7dc373669fa1 // indirect
+	github.com/cloudfoundry/bosh-cli v5.5.1+incompatible
+	github.com/cloudfoundry/bosh-utils v0.0.0-20180315210917-c6a922e299b8 // indirect
+	github.com/cloudfoundry/noaa v2.1.1-0.20190110210640-5ce49363dfa6+incompatible
+	github.com/cloudfoundry/sonde-go v0.0.0-20171206171820-b33733203bb4
+	github.com/cppforlife/go-patch v0.1.0 // indirect
+	github.com/cyphar/filepath-securejoin v0.2.1
+	github.com/docker/distribution v2.6.0-rc.1.0.20171109224904-e5b5e44386f7+incompatible
+	github.com/docker/docker v1.4.2-0.20171120205147-9de84a78d76e // indirect
+	github.com/elazarl/goproxy v0.0.0-20200809112317-0581fc3aee2d // indirect
+	github.com/elazarl/goproxy/ext v0.0.0-20200809112317-0581fc3aee2d // indirect
+	github.com/fatih/color v1.5.1-0.20170926111411-5df930a27be2
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135
+	github.com/gorilla/websocket v1.2.1-0.20171201014301-b89020ee79b8 // indirect
+	github.com/jessevdk/go-flags v1.4.1-0.20181221193153-c0795c8afcf4
+	github.com/kr/pty v1.1.1
+	github.com/lunixbochs/vtclean v1.0.0
+	github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e // indirect
+	github.com/mattn/go-colorable v0.1.0
+	github.com/mattn/go-isatty v0.0.3 // indirect
+	github.com/mattn/go-runewidth v0.0.5-0.20181218000649-703b5e6b11ae
+	github.com/moby/moby v1.4.2-0.20171120205147-9de84a78d76e
+	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d
+	github.com/onsi/ginkgo v1.14.1
+	github.com/onsi/gomega v1.10.2
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/pkg/errors v0.9.1
+	github.com/poy/eachers v0.0.0-20181020210610-23942921fe77 // indirect
+	github.com/sabhiram/go-gitignore v0.0.0-20171017070213-362f9845770f
+	github.com/sajari/fuzzy v1.0.0
+	github.com/sirupsen/logrus v1.2.0
+	github.com/tedsuo/ifrit v0.0.0-20191009134036-9a97d0632f00 // indirect
+	github.com/tedsuo/rata v1.0.1-0.20170830210128-07d200713958
+	github.com/vito/go-interact v0.0.0-20171111012221-fa338ed9e9ec
+	golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073
+	golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7
+	golang.org/x/text v0.3.3-0.20191230102452-929e72ca90de
+	gopkg.in/cheggaaa/pb.v1 v1.0.27
+	gopkg.in/yaml.v2 v2.3.0
+)
+
+replace gopkg.in/fsnotify.v1 v1.4.7 => github.com/fsnotify/fsnotify v1.4.7
+
+replace github.com/golang/protobuf => github.com/golang/protobuf v1.3.4