[release-2.0] fix(runtimes): Set numProcPerNode: 1 in DeepSpeed Runtime (#2863)

Signed-off-by: Andrey Velichkevich <andrey.velichkevich@gmail.com>
Co-authored-by: Andrey Velichkevich <andrey.velichkevich@gmail.com>

Author: google-oss-robot

manifests/base/runtimes/deepspeed_distributed.yaml

@@ -8,9 +8,7 @@ spec:
   mlPolicy:
     numNodes: 1
     mpi:
-      # TODO (andreyvelich): Change num proc to 1 and remove container resources after we
-      # allow to override it via TrainJob APIs.
-      numProcPerNode: 4
+      numProcPerNode: 1
       mpiImplementation: OpenMPI
       sshAuthMountPath: /home/mpiuser/.ssh
       runLauncherAsNode: true