Mission control and observatory post_upgrade stable memory

[peterpeterparker]

Once the new mission control is released, we should uncomment the post_upgrade code that uses stable memory for upgrade.

We should also uncomment the test mission-control.monitoring.upgrade.spec.ts.

We should also remove the post upgrade in the observatory.

[ethsdev]

Hello @peterpeterparker , sorry for leaving a comment here without respecting the team rules. As blockchain developer, I think my tech stack is fit for team project. So I want to prove my skills by solving some issues of team and join the team as a full-time developer. Could you give me a test task.