Decrease the wait time before SIGKILL

[deepikas20]

Describe your changes

Docker daemon (dockerd) typically sends a SIGTERM signal after 10 seconds. Previously, we waited 20 seconds before sending a SIGKILL, but systemd would sometimes reach its timeout and forcefully terminate the process before then approximately at 14-15 seconds. To prevent this issue I havve decreased the wait time to 13 seconds before sending SIGKILL. SIGTERM sometimes stops the process gracefully but it’s not always reliable so making this change is necessary.

Checklist before requesting a review

• I have performed a self-review of my own code
• I have verified that the code builds perfectly fine on my local system
• I have added tests that prove my fix is effective or that my feature works
• I have commented my code, particularly in hard-to-understand areas
• I have verified that my code follows the style already available in the repository
• I have made corresponding changes to the documentation