Replicate internals

[grtjn]

Issue #361 inspired me on the thought to create a fixed piece of ml-config that would add replica forests for all built-in databases. It could be deployed using:

./ml local bootstrap --replica-internals

To uninstall:

./ml local wipe --replica-internals

Slightly more challenging: replacing existing forests with forests-by-count across all hosts. Wiping them should retire them, and push everything back into a forest on the master host..

[grtjn]

I have some code, but #378 and #379 need to be solved first..

[grtjn]

I created code for this. It works like this:

$ ./ml local bootstrap --replicate-internals
Enabling replication for App-Services,Documents,Extensions,Fab,Last-Login,Meters,Modules,Schemas,Security,Triggers on vgtest-ml1...
... Bootstrap Complete

$ ./ml local wipe --internal-replicas
Wiping replicas for App-Services,Documents,Extensions,Fab,Last-Login,Meters,Modules,Schemas,Security,Triggers from vgtest-ml1..
... Wipe Complete

PR #384 needs to be merged first though, so that I can rebase to dev..