S3 refactor timer coros awspr multi worker

[PettitWesley]

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[PettitWesley]

I still don't know why the build is failing. I'm gonna try rebasing these changes on top of master and debug there instead.

[ 40%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_config.c.o
In file included from /home/ec2-user/fluent-bit/include/fluent-bit/flb_io.h:27:0,
                 from /home/ec2-user/fluent-bit/include/fluent-bit/flb_upstream.h:29,
                 from /home/ec2-user/fluent-bit/include/fluent-bit/flb_output_thread.h:24,
                 from /home/ec2-user/fluent-bit/src/flb_async_timer.c:22:
/home/ec2-user/fluent-bit/include/fluent-bit/flb_output.h: In function ‘flb_output_flush_create’:
/home/ec2-user/fluent-bit/include/fluent-bit/flb_output.h:591:35: error: dereferencing pointer to incomplete type ‘struct flb_out_thread_instance’
         pthread_mutex_lock(&th_ins->flush_mutex);
                                   ^~
[ 40%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_socket.c.o
make[2]: *** [src/CMakeFiles/fluent-bit-static.dir/flb_async_timer.c.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 40%] Building C object src/CMakeFiles/fluent-bit-static.dir/flb_network.c.o
make[1]: *** [src/CMakeFiles/fluent-bit-static.dir/all] Error 2
make: *** [all] Error 2