fixing flaky upgrade test

[shlomi-noach]

Description

endtoend/upgrade is yet again flaky. Looking into.

Checklist

• Should this PR be backported?
• Tests were added or are not required
• Documentation was added or is not required

Deployment Notes

Impacted Areas in Vitess

Components that this PR will affect:

• Query Serving
• VReplication
• Cluster Management
• Build/CI
• VTAdmin

[shlomi-noach]

Added the CI/workflow patches to all non-auto-generated tests:

    - name: Tune the OS
      run: |
        echo '1024 65535' | sudo tee -a /proc/sys/net/ipv4/ip_local_port_range
    # TEMPORARY WHILE GITHUB FIXES THIS https://github.com/actions/virtual-environments/issues/3185
    - name: Add the current IP address, long hostname and short hostname record to /etc/hosts file
      run: |
        echo -e "$(ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)\t$(hostname -f) $(hostname -s)" | sudo tee -a /etc/hosts
    # DON'T FORGET TO REMOVE CODE ABOVE WHEN ISSUE IS ADRESSED!

[shlomi-noach]

Upgrade test consistently passes in this PR, but still consistently fails on other PRs which have incorporated the changes in this PR (namely #7785)

[shlomi-noach]

vreplication_basic failure: https://github.com/vitessio/vitess/pull/7901/checks?check_run_id=2390417564

[shlomi-noach]

What this PR ended up doing is add the two patches: /etc/hosts and port-range, to all tests, especially those not auto-generated by make generate_ci_workflows. The upgrade test was one of those.