Fix static string size bug in store_timescale

There is a compile error when built with -Wall -Werror. The host in the
format is a static string that is 100 bytes. That with the other elements
of the format couuld exceed 128 resulting in truncated output.

ldms/src/contrib/store/timescale/store_timescale.c

@@ -332,7 +332,7 @@ open_store(struct ldmsd_store *s, const char *container, const char *schema,
         is->job_mid = -1;
         is->comp_mid = -1;
 
-        char str[128];
+        char str[256];
         snprintf(str, sizeof(str), "user=%s password=%s hostaddr=%s port=%s dbname=%s", strdup(user), password, strdup(hostaddr), strdup(port), strdup(dbname));
 
         is->conn = PQconnectdb(str);