DAOS-16484 test: Exclude local host in default interface selection (#…

…15049)

When including the local host in the default interface selection a
difference in ib0 speeds will cause the logic to select eth0 and then
the tcp provider.

Signed-off-by: Phil Henderson <[email protected]>

src/tests/ftest/util/environment_utils.py

@@ -9,7 +9,6 @@
 
 from ClusterShell.NodeSet import NodeSet
 # pylint: disable=import-error,no-name-in-module
-from util.host_utils import get_local_host
 from util.network_utils import (PROVIDER_ALIAS, SUPPORTED_PROVIDERS, NetworkException,
                                 get_common_provider, get_fastest_interface)
 from util.run_utils import run_remote
@@ -327,7 +326,7 @@ def _default_interface(self, logger, hosts):
             # Find all the /sys/class/net interfaces on the launch node (excluding lo)
             logger.debug("Detecting network devices - D_INTERFACE not set")
             try:
-                interface = get_fastest_interface(logger, hosts | get_local_host())
+                interface = get_fastest_interface(logger, hosts)
             except NetworkException as error:
                 raise TestEnvironmentException("Error obtaining a default interface!") from error
         return interface