Introduce vendoring of third party libraries

.gitignore

@@ -4,3 +4,4 @@ cli/cli
 cli/migrate
 .coverage
 .godoc.pid
+/vendor

Gopkg.toml

@@ -0,0 +1,82 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  name = "cloud.google.com/go"
+  version = "0.16.0"
+
+[[constraint]]
+  name = "github.com/aws/aws-sdk-go"
+  version = "1.12.28"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/cockroachdb/cockroach-go"
+
+[[constraint]]
+  name = "github.com/cznic/ql"
+  version = "1.1.0"
+
+[[constraint]]
+  name = "github.com/docker/docker"
+  version = "1.13.1"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/fsouza/fake-gcs-server"
+
+[[constraint]]
+  name = "github.com/go-sql-driver/mysql"
+  version = "1.3.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/gocql/gocql"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/google/go-github"
+
+[[constraint]]
+  name = "github.com/kshvakov/clickhouse"
+  version = "1.3.1"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/lib/pq"
+
+[[constraint]]
+  name = "github.com/mattn/go-sqlite3"
+  version = "1.4.0"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/net"
+
+[[constraint]]
+  branch = "master"
+  name = "google.golang.org/api"
+
+[[constraint]]
+  branch = "master"
+  name = "google.golang.org/genproto"