MAGECLOUD-1162: [GitHub] Deleting var/log while still writing to var/log/cloud.log

[oshmyheliuk]

Description

During the build phase of m2-ece-build, one of the build processes attempts to delete the var/log dir while another process still has var/log/cloud.log open for writing.
On an NFS system, this will cause an .nfsXXX file to be created when cloud.log is unlinked from one process while the other is still running. Consequently, a file system exception is thrown, and m2-ece-build is aborted.
While this may not be an issue in the Platform.sh containers, it is an error in the logic (to have one process delete a file that another is actively writing to), and we have to modify the code to use it locally.

Fixed Issues (if relevant)

https://magento2.atlassian.net/browse/MAGECLOUD-1162

Zephyr Tests

1. Run build and deploy scripts from ece-tools on NFS file system.

Contribution checklist

• Pull request has a meaningful description of its purpose
• Pull request was approved by architect
• Pull request was approved by QA member
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[andriyShevtsov]

QA approved