Integrating CodeIntelligenceTesting Go (#7191)

Integrating *CodeIntelligenceTesting* `Go` to support more informative instrumentation (for [this issue](https://github.com/google/oss-fuzz/issues/7164)):
1. A script to install the new `Go`
    * Bootstrap from the existing `Go`
    * Install `Go` from [CodeIntelligenceTesting](https://github.com/CodeIntelligenceTesting/go/tree/dev.libfuzzer.18)
    * Skip the built-in test case in CodeIntelligenceTesting because they take too long and one of them erroneously fails.
2. Create a new directory & `Dockerfile` dedicated to the new Go 
3. Add the new base directory name to [base_images.py](https://github.com/google/oss-fuzz/blob/master/infra/build/functions/base_images.py)

infra/base-images/base-builder-go-codeintelligencetesting/Dockerfile

@@ -0,0 +1,20 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder-go
+
+RUN install_go_CodeIntelligenceTesting.sh
+

infra/base-images/base-builder/Dockerfile

@@ -154,6 +154,7 @@ COPY cargo compile compile_afl compile_dataflow compile_libfuzzer compile_honggf
     write_labels.py bazel_build_fuzz_tests \
     # Go, java, and swift installation scripts.
     install_go.sh \
+    install_go_CodeIntelligenceTesting.sh \
     install_java.sh \
     install_python.sh \
     install_rust.sh \

infra/base-images/base-builder/install_go_CodeIntelligenceTesting.sh

@@ -0,0 +1,36 @@
+#!/bin/bash -eux
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+# Install CodeIntelligenceTesting Go.
+## Require at least Go1.4 to boostrap.
+cd /tmp
+git clone --depth=1 -b dev.libfuzzer.18 https://github.com/CodeIntelligenceTesting/go.git .go-CodeIntelligenceTesting
+cd .go-CodeIntelligenceTesting/src
+# Disable tests, at least one of which erroneously fails.
+sed -i '/^exec .* tool dist test -rebuild "$@"/ s/./#&/' run.bash
+./all.bash
+
+# Replace original Go with the one from CodeIntelligenceTesting.
+rm -rf /root/.go
+mv -f /tmp/.go-CodeIntelligenceTesting /root/.go
+
+# Install go114-fuzz-build with the new Go.
+rm -rf "$GOPATH/"
+mkdir -p "$GOPATH/"
+go install github.com/mdempsky/go114-fuzz-build@latest
+ln -s "$GOPATH/bin/go114-fuzz-build" "$GOPATH/bin/go-fuzz"
+

infra/build/functions/base_images.py

@@ -25,6 +25,7 @@ BASE_IMAGES = [
     'base-clang',
     'base-builder',
     'base-builder-go',
+    'base-builder-go-codeintelligencetesting',
     'base-builder-jvm',
     'base-builder-python',
     'base-builder-rust',