Use MPI for Khiops Coclustering

[popescu-v]

Description

Currently, the MPI command and its arguments are concatenated only to the Khiops tool path, which ends with the MODL executable.

However, since khiops-core:10.7.0-b.0 Khiops coclustering also uses MPI (currently, for model deployment, database check, and database sorting).

Questions/Ideas

• The goal of this issue is to concatenate the MPI command with the Khiops coclustering path as well.
  • That is, the MPI command (with arguments) should be prepended to both Khiops and Khiops coclustering. Hence, the test on the Khiops tool name is no longer necessary when prepending the MPI command (with arguments) to the Khiops tool command.