json_run_localhost infrastructure failures #18142
Description
The logs are full of messages like the following:
I0222 19:36:06.702665698 21211 subchannel.cc:960] Connect failed: {"created":"@1550864166.702421298","description":"Failed to connect to remote host: Connection refused","errno":111,"file":"src/core/lib/iomgr/tcp_client_posix.cc","file_line":207,"os_error":"Connection refused","syscall":"connect","target_address":"ipv6:[::1]:27162"}