Cannot specify deployment size in create deployment

[jasons2019]

Found a problem with the Following Command

./oasis create deployment --cacertificate-id wttnefqllmtap66jrwc1 --organization-id 95616625 --project-id 95616808 --region-id gcp-europe-west4 --name ScriptDeployment --version 3.4.7

** Error: FTL Failed to create deployment error="rpc error: code = InvalidArgument desc = coordinators value 3 is greater than the limit of 2"

** Notes:

• There is no way to list available versions
• There is no way to specify size or advanced features

[Robert-Stam]

• List of versions can be found with: oasis list arangodb versions
• The limits can be retrieved via oasis get server limits -o xxx -p yyy, there is no way to specify the limits during creation afaik.

[Robert-Stam]

There was a small bug in the server limits code, which is fixed now, so please update Oasis before continue.
I executed oasis get server limits -o free-test -p proj1 --region-id gcp-europe-west4 which results in

Coordinators            2 - 2
Coordinator-Memory-Size 1GB, 2GB
Dbservers               2 - 3
Dbserver-Memory-Size    1GB, 2GB
Dbserver-Disk-Size      2GB - 16GB

[Robert-Stam]

I added support for servers-preset in Oasis, this works now:
oasis create deployment -o free-test -p proj1 --region-id gcp-europe-west4 --name test --version 3.4.7 --servers-preset Tiny

You can get the presets with:
oasis list servers presets -o free-test -p proj1 --region-id gcp-europe-west4

[ewoutp]

Further improvements follow in #38