Updated Redis module for Centos compatibility

SubModules/redis/preconf.sh

@@ -1,3 +1,13 @@
 #!/bin/bash
 
+if [ "$shortdist" = "ubu1804" ] || [ "$osrel" = "ubu2004" ] || [ "$osrel" = "deb10" ] ; then
+# Debian/Ubunbtu redis variables
+    redisService=redis-server
+
+elif [ "$shortdist" = "cent8" ]; then
+# Centos redis variable
+    redisService=redis
+fi
+
+
 curl --retry 7 --retry-delay 5 -s https://git.ictmaatwerk.com/VPS-scripts/General/raw/branch/Main/Setup-Repo.sh |repo=redis osrel=$shortdist bash > $OUTPUT 2>&1