HADOOP-18052. Support Apple Silicon in start-build-env.sh

[aajisaka]

Description of PR

Use Dockerfile_aarch64 in Apple Silicon.

How was this patch tested?

Manually tested in M1 Pro MBP. However, Docker for Mac with Apple Silicon is too slow to develop.

bash-3.2$ echo $MACHTYPE
arm64-apple-darwin21
bash-3.2$ echo "$MACHTYPE" | cut -d- -f1
arm64

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• n/a Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• n/a If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• n/a If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 42s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 1s		No case conflicting files found.
+0 🆗	codespell	0m 1s		codespell was not available.
+0 🆗	shelldocs	0m 1s		Shelldocs was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ trunk Compile Tests _
+1 💚	mvninstall	32m 31s		trunk passed
+1 💚	mvnsite	25m 32s		trunk passed
+1 💚	shadedclient	19m 19s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	21m 38s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	20m 52s		the patch passed
+1 💚	shellcheck	0m 1s		No new issues.
+1 💚	shadedclient	19m 21s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	20m 14s		root in the patch passed.
+1 💚	asflicense	0m 58s		The patch does not generate ASF License warnings.
		163m 21s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3817/1/artifact/out/Dockerfile
GITHUB PR	#3817
Optional Tests	dupname asflicense mvnsite unit codespell shellcheck shelldocs
uname	Linux 29a577135798 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 225fd8f
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3817/1/testReport/
Max. process+thread count	716 (vs. ulimit of 5500)
modules	C: . U: .
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3817/1/console
versions	git=2.25.1 maven=3.6.3 shellcheck=0.7.0
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[jojochuang]

+1

[aajisaka]

Merged. Thank you @jojochuang