ARROW-16102: [C++] Add support for building with system gRPC and bundled GCS

[kou]

find_package(gRPC) may find system absl::* targets.
If we found system absl::* targets, we use them instead of building absl::*.

Bundle google-cloud-cpp is updated to 1.39.0 for
googleapis/google-cloud-cpp#8536 .

[github-actions]

https://issues.apache.org/jira/browse/ARROW-16102

[kou]

@emkornfield Do you want to merge this before #12763 is merged or after? This will be conflicted with #12763.

This will be ready to merge once https://github.com/apache/arrow/runs/5864515682?check_suite_focus=true is passed.

[kou]

@github-actions crossbow submit -g cpp

[github-actions]

Revision: bffc9dcdf7df9bfa8ae46898cd895adf5355016e

Submitted crossbow builds: ursacomputing/crossbow @ actions-1823

Task	Status
test-build-cpp-fuzz
test-conda-cpp
test-conda-cpp-valgrind
test-debian-10-cpp-amd64
test-debian-10-cpp-i386
test-debian-11-cpp-amd64
test-debian-11-cpp-i386
test-fedora-35-cpp
test-ubuntu-18.04-cpp
test-ubuntu-18.04-cpp-release
test-ubuntu-18.04-cpp-static
test-ubuntu-20.04-cpp
test-ubuntu-20.04-cpp-14
test-ubuntu-20.04-cpp-17
test-ubuntu-20.04-cpp-bundled
test-ubuntu-20.04-cpp-thread-sanitizer
test-ubuntu-21.04-cpp

[emkornfield]

@kou thank you very much for the changes. Please go ahead and merge when it is ready, I'll handle the merge conflicts. #12763 still needs review.

[kou]

@emkornfield OK. Thanks for confirming it.

[kou]

@github-actions crossbow submit -g cpp

[github-actions]

Revision: 9685ef52fa2d2559cf3a47b2187308d43359e997

Submitted crossbow builds: ursacomputing/crossbow @ actions-1831

Task	Status
test-build-cpp-fuzz
test-conda-cpp
test-conda-cpp-valgrind
test-debian-10-cpp-amd64
test-debian-10-cpp-i386
test-debian-11-cpp-amd64
test-debian-11-cpp-i386
test-fedora-35-cpp
test-ubuntu-18.04-cpp
test-ubuntu-18.04-cpp-release
test-ubuntu-18.04-cpp-static
test-ubuntu-20.04-cpp
test-ubuntu-20.04-cpp-14
test-ubuntu-20.04-cpp-17
test-ubuntu-20.04-cpp-bundled
test-ubuntu-20.04-cpp-thread-sanitizer
test-ubuntu-21.04-cpp

[kou]

@github-actions crossbow submit -g cpp

[github-actions]

Revision: 3e279ab

Submitted crossbow builds: ursacomputing/crossbow @ actions-1832

Task	Status
test-build-cpp-fuzz
test-conda-cpp
test-conda-cpp-valgrind
test-debian-10-cpp-amd64
test-debian-10-cpp-i386
test-debian-11-cpp-amd64
test-debian-11-cpp-i386
test-fedora-35-cpp
test-ubuntu-18.04-cpp
test-ubuntu-18.04-cpp-release
test-ubuntu-18.04-cpp-static
test-ubuntu-20.04-cpp
test-ubuntu-20.04-cpp-14
test-ubuntu-20.04-cpp-17
test-ubuntu-20.04-cpp-bundled
test-ubuntu-20.04-cpp-thread-sanitizer
test-ubuntu-21.04-cpp

[kou]

CI failures are unrelated.

This is ready to merge.

[kou]

+1

[ursabot]

Benchmark runs are scheduled for baseline = 29f3873 and contender = 5fa0844. 5fa0844 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Finished ⬇️0.42% ⬆️0.04%] test-mac-arm
[Failed ⬇️0.72% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.04% ⬆️0.0%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ec2-t3-xlarge-us-east-2/builds/480| 5fa08449 ec2-t3-xlarge-us-east-2>
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-test-mac-arm/builds/465| 5fa08449 test-mac-arm>
[Failed] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ursa-i9-9960x/builds/466| 5fa08449 ursa-i9-9960x>
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ursa-thinkcentre-m75q/builds/475| 5fa08449 ursa-thinkcentre-m75q>
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ec2-t3-xlarge-us-east-2/builds/479| 29f38734 ec2-t3-xlarge-us-east-2>
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-test-mac-arm/builds/464| 29f38734 test-mac-arm>
[Failed] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ursa-i9-9960x/builds/465| 29f38734 ursa-i9-9960x>
[Finished] <https://buildkite.com/apache-arrow/arrow-bci-benchmark-on-ursa-thinkcentre-m75q/builds/474| 29f38734 ursa-thinkcentre-m75q>
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java