s-b: print error limiting parameters in the initial config dump

Now, the values of "error-limit" and "error-limit-at-row" flags are
printed along with other parameters when the scylla-bench frontend is
being started.

Author: piodul

src/bin/cql-stress-scylla-bench/args.rs

@@ -429,6 +429,16 @@ impl ScyllaBenchArgs {
         println!("Mode:\t\t\t {}", show_mode(&self.mode));
         println!("Workload:\t\t {}", show_workload(&self.workload));
         println!("Timeout:\t\t {}", format_duration(self.timeout));
+        if self.max_retries_per_op == u64::MAX {
+            println!("Max error number at row: unlimited");
+        } else {
+            println!("Max error number at row: {}", self.max_retries_per_op);
+        }
+        if self.max_retries_in_total == u64::MAX {
+            println!("Max error number:\t unlimited");
+        } else {
+            println!("Max error number:\t {}", self.max_retries_in_total);
+        }
         println!(
             "Consistency level:\t {}",
             show_consistency_level(&self.consistency_level)