Hi all,

We are planning on doing a system upgrade on our OVSCI automation
system this Friday 9/9/22.

This will affect our upstream robots (i.e. ovs, ovn, dpdk). This
affects patchwork sync and github actions sync, etc.
After the upgrade is completed the robots will be started again and
expected to work normally. Any obvious issues that appear will be
resolved on demand

The upgrade will start estimated at 9AM EST and last for the entire day

The highlights are:
* First and foremost Backup. If we run into any major roadblocks we
can always rollback
* Upgrade from rhel7.9 to rhel8.4
* After the upgrade Jenkins jobs will be enabled manually one by one
for testing and making sure they work properly
* We have done some testing with the upgrade ahead of time so we know
what to expect. However, there is still a chance of unexpected things
to happen. This is why we are enabling jobs one by one. This will
allow us to fix any issues on demand

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