Multicluster with default GEO differing

[philbrookes]

things to cover in the doc:

• what alerts would be firing (writecounter)
• what would policy conditions would look like

steps to recover:

• identify what default GEO value should be
• find the policy(ies) with differing values and update them

steps to ensure recovery is successful:

• confirm alerts stop firing
• confirm policy status looks correct