Feature: stonith_admin: add ability to target topology by pattern or attribute
Updated for recent API/implementation changes. Example of new command line syntax:
stonith_admin -i 1 -v device1 -r 'pcmk1' # target by node name stonith_admin -i 1 -v device1 -r '@pcmk.*' # target by node name pattern stonith_admin -i 1 -v device1 -r 'rack=1' # target by attribute name/value pair