Replace CRLF in all commit messages which currently causes DCO check …

[swagatbora90]

Came across this issue where a CRLF in the git commit message was causing git-validation to fail
firecracker-microvm/firecracker-containerd#619

This PR tries the fix the above issue by replacing any CRLF in the commit message upfront.

Example commit message:

commit 78381c382b17ac8c8ef6ffbfae27f65db8b186a7 (HEAD -> main, origin/main, origin/HEAD)
Author: Swagat Bora <swagatbora90@gmail.com>
Date:   Mon May 2 16:33:53 2022 -0700

    Allow configuration of block_device cache strategy in firecracker (#615)
    
    Signed-off-by: Swagat Bora <sbora@amazon.com>
    
    Co-authored-by: Swagat Bora <sbora@amazon.com>

Commit has the expected DCO, but git-validation still fails

Current

[ec2-user@ip-172-31-9-211 firecracker-containerd]$ /git-validation/main -run DCO,short-subject -range HEAD1..HEAD

• 78381c3 "Allow configuration of block_device cache strategy in firecracker (#615)" ... FAIL

• FAIL - does not have a valid DCO
  1 commits to fix

After this change

[ec2-user@ip-172-31-9-211 firecracker-containerd]$ /git-validation/main -run DCO,short-subject -range HEAD1..HEAD

• 78381c3 "Allow configuration of block_device cache strategy in firecracker (#615)" ... PASS

[vbatts]

Thanks @swagatbora90 !