SCHED-1648: Better support for Block topology

[dstaroff]

Problem

Existing worker-init init container dynamically registers worker topology as if the Slurm cluster is always has TopologyPlugin=topology/tree - it generates worker topology as this: default:<tier0>:<tier1>:<tier2>:<worker>. This doesn't work for block topology, as it expects workers to be part of only one block.

Solution

Provide separate dynamic topology generation based on the topology plugin:

• For topology/tree - nothing changes
• For topology/block - generate default:<tier0>:<worker>
• Other topology plugins are not supported

Additional changes

Support for pattern names in topology.conf

We used to generate a comma-separated list of nodes, which may hit the CM size limit on really big clusters. Now we use patterns which are length-efficient and easy-readable. Sorted order and possible gaps are managed automatically.

Support for topology section of SlurmCluster CR to be set by Helm

It was impossible to set e.g. blockSize via Helm.

Release Notes

Feature: TopologyPlugin=topology/block is supported for dynamic worker topology setting.
Feature: topology.conf uses pattern names for nodes instead of comma-separated list.
Feature: topology section is possible to change via slurm-cluster Helm chart.