HDDS-15249. SCM Pipeline Support Create And Get With StorageTier

[devmadhuu]

What changes were proposed in this pull request?

Thread a StorageTier from the SCM block-allocation RPC down to PipelineFactory.create, so callers can request a pipeline (and, via #10810 , a container) on a specific storage tier. Removes the // TODO StoragePolicy replace this StorageTier with the passed StorageTier hardcode in PipelineFactory that forced every pipeline creation onto DISK.

Please describe your PR in detail:

1. Thread StorageTier through the block-allocation RPC and BlockManager
2. Wire StorageTier into PipelineManager and PipelineFactory

Depends on #10810 (which adds a persisted StorageTier field to ContainerInfo)

Now with this PR:

• OM can now send a tier on AllocateScmBlock.
• SCM builds a pipeline on that tier (via RatisPipelineProvider/ECPipelineProvider, already tier-capable from HDDS-15250).
• The allocated container inherits the tier from its pipeline (via HDDS-15408. SCM ContainerInfo Support Create And Get With StorageTier #10810) and survives SCM restart.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-15249

How was this patch tested?

Updated and extended tests in TestBlockManager, TestSCMBlockProtocolServer