NXCALS-1376 Changes deploy download_dir variable to use '/opt' instead of '/tmp'

#Merge request template @acc-logging-team - please have a look for approval.

This MR is about reducing the issues that we have with space limitation on root '/' partition at CO machines. Currently that partition is configured to contain /tmp dir as well with a total space not more that 15GBs. This is causing a lot of issues to our side, cause our ansible download folder, is located under /tmp and whenever this partition gets full, our whole CI/CD pipeline fails, because we literally can't fetch any more binaries there.

As a proposed fix to that issue, this MR changes that ansible binaries download dir to a path under /opt. (/opt/{user}/ansible_deploy_downloads).