sym-link aws to bin

[bwagner5]

Issue #, if available:
N/A

Description of changes:

• sym link aws cli v2 to /bin/aws so that root has the aws binary in the path by default.

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Testing Done

sh-4.2$ which aws
/usr/bin/aws
sh-4.2$ aws --version
aws-cli/2.8.13 Python/3.9.11 Linux/5.4.219-126.411.amzn2.x86_64 exe/x86_64.amzn.2 prompt/off
sh-4.2$ sudo su
[root@i-02cffc64b04e0690b bin]# which aws
/bin/aws
[root@i-02cffc64b04e0690b bin]# aws --version
aws-cli/2.8.13 Python/3.9.11 Linux/5.4.219-126.411.amzn2.x86_64 exe/x86_64.amzn.2 prompt/off

See this guide for recommended testing for PRs. Some tests may not apply. Completing tests and providing additional validation steps are not required, but it is recommended and may reduce review time and time to merge.

[guessi]

LGTM 👍

Background story:
Offline discuss with bwagner5 and cartermckinnon. After PR#1066 got merged, user may found thatsudo aws no longer work if the --bin-dir flag not specified. Because --bin-dir is pointed to /usr/local/bin by default but PATH for root user does not include /usr/local/bin by default.

More info could be found here and here.

and here's the reference link for AWSCLIv2 installation link here.