Minor changes for ScyllaDB compatibility

lib/src/connection.cpp

@@ -508,7 +508,7 @@ bool ConnectionImpl::initSchema() {
           "ttl bigint",                 /* Time to live in nanoseconds for readings of this sensor */
 
           "name",                       /* Make the "name" column the primary key */
-          "CACHING = {'keys' : 'all'} "); /* Enable compact storage and maximum caching */
+          "CACHING = {'keys' : 'ALL'} "); /* Enable compact storage and maximum caching */
   }
 
   /* Creating simple key-value table for misc metadata */
@@ -518,7 +518,7 @@ bool ConnectionImpl::initSchema() {
                            "name varchar, "                /* Property name */
                            "value varchar",                 /* Property value */
                            "name",                         /* Make the "name" column the primary key */
-                           "CACHING = {'keys' : 'all'} "); /* Enable compact storage and maximum caching */
+                           "CACHING = {'keys' : 'ALL'} "); /* Enable compact storage and maximum caching */
     }
 
   /* Keyspace and column family for raw and virtual sensor data */