Use mca btl_tcp_if_exclude to skip docker network in HPCG benchmark.
Use mca btl_tcp_if_exclude to skip docker network in HPCG benchmark.

PiperOrigin-RevId: 347691671

GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker