Add multi-mount parallelstore support

[harshthakkar01]

This PR,

• excludes GPU interfaces in daos config file
• Add support for multiple mount for single parallelstore instance (creates systemd service for each mount)

Submission Checklist

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• Fork your PR branch from the Toolkit "develop" branch (not main)
• Test all changes with pre-commit in a local branch #
• Confirm that "make tests" passes all tests
• Add or modify unit tests to cover code changes
• Ensure that unit test coverage remains above 80%
• Update all applicable documentation
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[tpdownes]

I would like to know a bit more about what attempting to support multiple Parallelstore instances. In the meantime, the changes I suggest will improve reliability.

[tpdownes]

In addition to the standard tests I tested against this blueprint:

---
blueprint_name: test-ps

vars:
  deployment_name: test-ps
  project_id: hpc-toolkit-gsc
  region: us-central1
  zone: us-central1-c
  parallelstore_ips: "[10.80.175.133,10.80.175.132,10.80.175.130]"

deployment_groups:
- group: primary
  modules:

  - id: network
    source: modules/network/pre-existing-vpc
    settings:
      network_name: a3mega-sys-net
      subnetwork_name: a3mega-sys-subnet

  - id: gpunet
    source: modules/network/pre-existing-vpc
    settings:
      network_name: a3mega-cluster-dev-gpunet-0
      subnetwork_name: a3mega-cluster-dev-gpunet-0-subnet

  - id: parallelstore-rwx
    source: modules/file-system/pre-existing-network-storage
    settings:
      fs_type: daos
      remote_mount: $(vars.parallelstore_ips)
      local_mount: /parallelstore/rwx
      mount_options: disable-caching,thread-count=26,eq-count=13,multi-user

  - id: parallelstore-rwo
    source: modules/file-system/pre-existing-network-storage
    settings:
      fs_type: daos
      remote_mount: $(vars.parallelstore_ips)
      local_mount: /parallelstore/rwo
      mount_options: disable-wb-cache,thread-count=26,eq-count=13,multi-user

  - id: vm
    source: modules/compute/vm-instance
    use:
    - parallelstore-rwo
    - parallelstore-rwx
    settings:
      machine_type: n2-standard-8
      name_prefix: id
      disk_type: pd-ssd
      network_interfaces:
      - network: null
        subnetwork: $(network.subnetwork_self_link)
        subnetwork_project: null
        network_ip: null
        stack_type: null
        access_config: []
        ipv6_access_config: []
        alias_ip_range: []
        queue_count: null
        nic_type: GVNIC
      - network: null
        subnetwork: $(gpunet.subnetwork_self_link)
        subnetwork_project: null
        network_ip: null
        stack_type: null
        access_config: []
        ipv6_access_config: []
        alias_ip_range: []
        queue_count: null
        nic_type: GVNIC

and observed the expected outcome:

exclude_fabric_ifaces: ["lo","eth1"]