Modify VPC- Cascading Proxy to enable routetable_support_type

Running VMs are not affected, but creation/modification of ECSs might not work for some pods in mentioned timeframe. A pod is a organisational unit of hardware in OTC.
In case of issues afterwards, please contact the Open Telekom Cloud Service Desk.

Impact: Scheduled maintenance
Affected Region(s): EU-DE
Affected Service(s): Elastic Cloud Server, Virtual Private Cloud
Start date: 2024-05-30 18:00 UTC
Planned end date: 2024-05-30 20:00 UTC