logd: start logd service in logd uid

Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests
      Manual inspect grep '^Cap' /proc/<tid>/status for correct capabilities
Bug: 32450474
Change-Id: Ia6a3872901969a789d4309d410dbfd5f5d17b3ce
1 file changed
tree: 6eb90bb0e1b6817a626f5a04060827f37ae55146
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/