Accept socket connection before tracing.

Sometimes dumping threads takes a long time and bugreport times
out. This change will cause us to accept the bugreport socket connection
before dumping threads and should avoid the failed to connect to dumpstate
service problems we've seen.

Bug: 17758374
Change-Id: I80afa0353cf1c340873f481a8d1d7faffff54120
1 file changed