fix(test): flaky fabric AIO container boot hyperledger#876

Epic facepalm once again. Turns out the default restart try
count of supervisord is too low which leads to race conditions.
Increasing the retry count from 4 to 20 should do it, this way
the fabric-network process (see supervisord.conf file) should
be 5 times as "patient" waiting for the docker daemon to launch
within the AIO container.

What was happening before is that the fabric-network script
tried launching itself in parallel with the docker daemon, but
it would time out before the docker daemon could come online.

Fixes hyperledger#876

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

tools/docker/fabric-all-in-one/supervisord.conf

@@ -8,6 +8,7 @@ loglevel = debug
 command=/usr/sbin/sshd -D
 autostart=true
 autorestart=true
+startretries=20
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 stdout_logfile=/dev/stdout
@@ -17,6 +18,7 @@ stdout_logfile_maxbytes=0
 command=dockerd-entrypoint.sh
 autostart=true
 autorestart=true
+startretries=20
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 stdout_logfile=/dev/stdout
@@ -26,6 +28,7 @@ stdout_logfile_maxbytes=0
 command=/run-fabric-network.sh
 autostart=true
 autorestart=unexpected
+startretries=20
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 stdout_logfile=/dev/stdout