Flexible Instance Types

[mtfranchetto]

Description

Introducing the support of ParallelCluster Flexible Instance Types.
Single instance types are still supported if PC 3.2.0 is installed through PCM.

To ensure backwards compatibility, I have extracted all instance types checks into separate files, and switch between the two versions based on a feature flag.
The single instance type code won't be touched or tested as it's going to be deprecated, and then removed, in future releases.

Moreover:

• removed the GDR check, optional since PC 3.0.1
• removed checks for Multithreading support as they weren't needed
• fixed the default instance type for compute resource, defaulted to c5n.large

N.B. the dry run will fail because in PC 3.3.0b1 (the latest version available at the moment) the Instances field is named InstanceTypeList. In PC 3.3.0 it will be named properly, but if you need to create some clusters in the meantime, just rename the field manually before creating a cluster.

For tech debt: since this PR is already complex I did not fix hardcoded labels or TS warnings. This will be done in a subsequent PR.

How Has This Been Tested?

• dry run with PC 3.3.0b1 and created queues and compute resources with multiple instance types (see video)
• tested the old flow with PC 3.2.0

Feature recording

Screen.Recording.2022-10-21.at.10.48.37.mov

References

PR Quality Checklist

• I added tests to new or existing code
• I removed hardcoded strings and used our i18n solution instead (see here)
• I checked that infrastructure/update_infrastructure.sh runs without any error
• I checked that npm run build builds without any error
• I checked that clusters are listed correctly
• I checked that a new cluster can be created (config is produced and dry run passes)
• I checked that login and logout work as expected

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