Support dumpsys timeouts in milliseconds

- add new dumpsys argument to specify timeouts in milliseconds
- use milliseconds to define timeouts in dumpstate
- minor dumpsys output format changes:
    "SERVICE '<service_name>' DUMP TIMEOUT (1s) EXPIRED" ->
    "SERVICE '<service_name>' DUMP TIMEOUT (1000ms) EXPIRED"

Bug: 27429130
Test: mmm -j32 frameworks/native/cmds/dumpsys && \
      mmm -j32 frameworks/native/cmds/dumpstate && \
      adb sync data && adb shell /data/nativetest/dumpsys_test/dumpsys_test && \
      adb shell /data/nativetest64/dumpsys_test/dumpsys_test && \
      adb shell /data/nativetest/dumpstate_test/dumpstate_test && \
      adb shell /data/nativetest64/dumpstate_test/dumpstate_test && \
      printf "\n\n#### ALL TESTS PASSED ####\n"

    Change-Id: Ibc96ad030bb2c6d880b8201c9b6241fce20b284f

Change-Id: I6ef2ff19787f2b6d940d56e453a1a7462a8c854a