Ignore mpi4py warnings.

Change-Id: I6f9984b3d264baee169e1dd3114bb50dd262cafe
Merge topic '13818_fix_plot_min_max' into next

aa5fde5 Ignore mpi4py warnings.
Fixed shadowed variable warning.

Change-Id: I0889bbb7183422b3e661fe4be58fbeba5ce70d59
fix shadowed variable warning

Change-Id: I7ea49e7d1a2df04fe2ac7a3db06b67e7d5f873d0
Merge topic '13818_fix_plot_min_max' into next

091e4d8 fix shadowed variable warning
fe43722 Fixed shadowed variable warning.