+ Remove the spawned thread inside the ReportFile for filter_and_write_report
because it leads to accessing freed memory
Instead, let the caller of ReportFile::startFileteringData create the thread.
ReportFile class shouldn't care about whether it's writing to a pipe for IPC
or regular file.
+ Add uri building in incidentd
+ Add metadata and headers to incident reports
Test: existing passed tests in incidentd_test still pass.
Manually tested with statsd
Change-Id: I5fef900d31f5d181275814f1e1c8c98443f201a7
