Gracefull handle dumpstate exceptions in CarBugReportMgrService

- Stop printing stack trace when connecting to dumpstate fails,
  only print if all the retries fail.
- Always sleep for 1s before connecting to dumpstate socket,
  because it takes some time to warm up.

Change-Id: I380c63629442b660c69cbcd84b66a54dfcaf5c9b
Bug: 131704106
Test: manually on hawk
(cherry picked from commit 7538bf4396a97d6ecc2d444a40f78eec5866d7bf)
1 file changed