ENH: Add Valgrind suppression file for Ubuntu 18.04 LTS
ENH: Add Valgrind suppression file for Ubuntu 18.04 LTS

Suppressing valgrind defects from the system libraries.

LucasGandel/ITK,thewtex/ITK,BRAINSia/ITK,richardbeare/ITK,malaterre/ITK,Kitware/ITK,thewtex/ITK,malaterre/ITK,vfonov/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,hjmjohnson/ITK,vfonov/ITK,Kitware/ITK,hjmjohnson/ITK,LucasGandel/ITK,Kitware/ITK,vfonov/ITK,malaterre/ITK,BRAINSia/ITK,LucasGandel/ITK,LucasGandel/ITK,hjmjohnson/ITK,vfonov/ITK,LucasGandel/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,LucasGandel/ITK,BRAINSia/ITK,hjmjohnson/ITK,vfonov/ITK,richardbeare/ITK,hjmjohnson/ITK,thewtex/ITK,richardbeare/ITK,hjmjohnson/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,Kitware/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,LucasGandel/ITK,thewtex/ITK,thewtex/ITK,hjmjohnson/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,malaterre/ITK,Kitware/ITK,BRAINSia/ITK,richardbeare/ITK,vfonov/ITK,LucasGandel/ITK,malaterre/ITK,richardbeare/ITK,malaterre/ITK,vfonov/ITK,vfonov/ITK,richardbeare/ITK,malaterre/ITK,Kitware/ITK