replace gobin with go install

The repository github.com/myitcv/gobin has already been archived,
and the `go install` command accepts arguments with version suffixs
starting from 1.16 (for example, go install example.com/[email protected]).
So there is no reason to continue to use gobin.

scripts/test_lib.sh

@@ -353,23 +353,27 @@ function tool_exists {
   fi
 }
 
-# Ensure gobin is available, as it runs majority of the tools
-if ! command -v "gobin" >/dev/null; then
-    GOARCH="" run env GO111MODULE=off go get github.com/myitcv/gobin || exit 1
-fi
-
 # tool_get_bin [tool] - returns absolute path to a tool binary (or returns error)
 function tool_get_bin {
-  tool_exists "gobin" "GO111MODULE=off go get github.com/myitcv/gobin" || return 2
-
   local tool="$1"
+  local pkg_part="$1"
   if [[ "$tool" == *"@"* ]]; then
+    pkg_part=$(echo "${tool}" | cut -d'@' -f1)
     # shellcheck disable=SC2086
-    run gobin ${GOBINARGS:-} -p "${tool}" || return 2
+    run go install ${GOBINARGS:-} "${tool}" || return 2
   else
     # shellcheck disable=SC2086
-    run_for_module ./tools/mod run gobin ${GOBINARGS:-} -p -m --mod=readonly "${tool}" || return 2
+    run_for_module ./tools/mod run go install ${GOBINARGS:-} "${tool}" || return 2
   fi
+
+  # remove the version suffix, such as removing "/v3" from "go.etcd.io/etcd/v3".
+  local cmd_base_name
+  cmd_base_name=$(basename "${pkg_part}")
+  if [[ ${cmd_base_name} =~ ^v[0-9]*$ ]]; then
+    pkg_part=$(dirname "${pkg_part}")
+  fi
+
+  command -v "$(basename "${pkg_part}")"
 }
 
 # tool_pkg_dir [pkg] - returns absolute path to a directory that stores given pkg.

tests/Dockerfile

@@ -44,7 +44,6 @@ WORKDIR ${GOPATH}/src/go.etcd.io/etcd
 
 ADD ./scripts/install-marker.sh /tmp/install-marker.sh
 
-RUN GO111MODULE=off go get github.com/myitcv/gobin
 RUN /tmp/install-marker.sh amd64 \
   && rm -f /tmp/install-marker.sh \
   && curl -s https://codecov.io/bash >/codecov \

tools/mod/install_all.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 
 cd ./tools/mod || exit 2
-go list --tags tools -f '{{ join .Imports "\n" }}' | xargs gobin -p
+go list --tags tools -f '{{ join .Imports "\n" }}' | xargs go install