Misc fixes for Docker around Sentinel (#1391)

Found while fixing up runs for #1067. Docker layer cache sucks :)

tests/RedisConfigs/Docker/docker-entrypoint.sh

@@ -4,6 +4,7 @@ if [ "$#" -ne 0 ]; then
     exec "$@"
 else
     mkdir -p /var/log/supervisor
+    mkdir Temp/
 
     supervisord -c /etc/supervisord.conf
     sleep 3

tests/RedisConfigs/Sentinel/redis-7010.conf

 port 7010
+repl-diskless-sync yes
+repl-diskless-sync-delay 0
 maxmemory 100mb
 appendonly no
 dir "../Temp"

tests/RedisConfigs/Sentinel/redis-7011.conf

 port 7011
+slaveof 127.0.0.1 7010
+repl-diskless-sync yes
+repl-diskless-sync-delay 0
 maxmemory 100mb
 appendonly no
 dir "../Temp"
 dbfilename "sentinel-target-7011.rdb"
 save ""
\ No newline at end of file
-slaveof 127.0.0.1 7010
\ No newline at end of file

tests/RedisConfigs/Sentinel/sentinel-26379.conf

 port 26379
 sentinel monitor mymaster 127.0.0.1 7010 1
 sentinel down-after-milliseconds mymaster 1000
-sentinel failover-timeout mymaster 2000
+sentinel failover-timeout mymaster 1000
 sentinel config-epoch mymaster 0
 dir "../Temp"
\ No newline at end of file

tests/RedisConfigs/Sentinel/sentinel-26380.conf

 port 26380
 sentinel monitor mymaster 127.0.0.1 7010 1
 sentinel down-after-milliseconds mymaster 1000
-sentinel failover-timeout mymaster 2000
+sentinel failover-timeout mymaster 1000
 sentinel config-epoch mymaster 0
 dir "../Temp"
\ No newline at end of file

tests/RedisConfigs/Sentinel/sentinel-26381.conf

 port 26381
 sentinel monitor mymaster 127.0.0.1 7011 2
 sentinel down-after-milliseconds mymaster 1000
-sentinel failover-timeout mymaster 2000
-sentinel config-epoch mymaster 21
-dir "../Temp/sentinel-26381"
+sentinel failover-timeout mymaster 1000
+sentinel config-epoch mymaster 0
+dir "../Temp"

tests/RedisConfigs/docker-compose.yml

@@ -11,3 +11,5 @@ services:
       - 7000-7006:7000-7006
       - 7010-7011:7010-7011
       - 26379-26381:26379-26381
+    sysctls :
+      net.core.somaxconn: '511'