[debugd] change default ping count to infinite

Change the default ping count to be consistent with how cmd-line ping
works--send ping packets until interrupted.

BUG=none
TEST=run ping gw from crosh and verify it no longer stops after 4 packets

Change-Id: I3552db111975b55f47e67c6a9d16bd846a23a0e2
1 file changed
tree: 266352d96515580c1772177de3b6d7f16ddac924
  1. doc/
  2. share/
  3. src/
  4. Makefile
  5. README