trace-cmd: Extend option "-v" to delete an ftrace instance

Extended the "trace-cmd set" option "-v" to delete the instance specified
after it on the command line with "-B". For example:
 trace-cmd set -v -B bar -B foo
will delete instance bar and create a new instance foo.

Link: http://lore.kernel.org/linux-trace-devel/20200603121506.49992-5-tz.stoyanov@gmail.com

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
4 files changed