Draft: Split caascad configurations / corp configurations

Split fe_service_account_cloudeye_exporter

Split ingress_controller

Split fe_loadbalancer

Split vault

Split fe_rds

We can't reference fe_base in corp, but we can use an output

Move fe_vpc_peering in ocb-corp

Move specific corp configs in ocb-corp

Split fe_whitelist

Move configs in contexes

Move configs in contexts dir

Update doc

Fix ocb-corp envs

ci: support contexts

Fix some schemas location

ci: do not use abs path

When applying we won't have the same abs path

ci: add context definition

contexts: opa is a shared config

ci: plan-all contexts

ci: alert-diff contexts support

ci: rewrite alert script in python

ci/alert-diff: rename any to all

contexts: aws_ingress config is shared

ci: replace cue apply command with bash script

Slow evaluation and RAM issues when using cue flow.