Add CodeCommit permission to EC2 instance profile

[verdimrc]

🐛 Bug report

• [x] I have checked that this issue has not already been reported.

Describe the bug

EC2 instance does not have code-commit access, however the SageMaker notebook does. Propose to make the EC2 instance on-par with SageMaker, with access to code-commit.

To reproduce

git clone from code commit will fail with 403 forbidden.

Expected behavior

git clone from code-commit should work.

System information

• awscli version: aws-cli/1.18.179 Python/3.7.6 Linux/4.14.203-156.332.amzn2.x86_64 botocore/1.19.19
• SageMaker Python SDK version: irrelevant
• Docker image: N/A
• Python version: aws-cli/1.18.179 Python/3.7.6 Linux/4.14.203-156.332.amzn2.x86_64 botocore/1.19.19

[verdimrc]

@yihyap: thank you for the PR.