Add platform type constraint to passthrough network tests using node_requirement

[Copilot]

Four passthrough network performance tests use node_requirement without specifying supported_platform_type, while other tests in the same file already restrict to CLOUD_HYPERVISOR via simple_requirement.

Changes

• Added supported_platform_type=[CLOUD_HYPERVISOR] to node_requirement() calls in:
  • perf_tcp_ntttcp_passthrough_host_guest
  • perf_udp_1k_ntttcp_passthrough_host_guest
  • perf_tcp_ntttcp_passthrough_two_guest
  • perf_udp_1k_ntttcp_passthrough_two_guest

Example

# Before
requirement=node_requirement(
    node=schema.NodeSpace(
        node_count=1,
        memory_mb=search_space.IntRange(min=8192),
    )
)

# After
requirement=node_requirement(
    node=schema.NodeSpace(
        node_count=1,
        memory_mb=search_space.IntRange(min=8192),
    ),
    supported_platform_type=[CLOUD_HYPERVISOR],
)

These tests call _configure_passthrough_nic_for_node, which requires libvirt-specific passthrough device configuration only available on CLOUD_HYPERVISOR.

Original prompt

for any test case in lisa/microsoft/testsuites/performance/networkperf_passthrough.py which has TestCaseMetadata, if it uses _configure_passthrough_nic_for_node, please add supported_platform_type=[CLOUD_HYPERVISOR], in case node_requirement

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