SWDEV-296922 : Incorrect rounding due to integer division in rocprofiler metrics

Changed derived metrics to double from int64.
Fixed standalone test due to int64 to float change
Fixed intercept test due to int64 to float change.

Change-Id: I49631c187406ae9dd94a869b3bb13772012e8cdf

test/app/intercept_test.cpp

@@ -124,6 +124,9 @@ void dump_context_entry(context_entry_t* entry, rocprofiler_feature_t* features,
       case ROCPROFILER_DATA_KIND_INT64:
         fprintf(stdout, "= (%lu)\n", p->data.result_int64);
         break;
+      case ROCPROFILER_DATA_KIND_DOUBLE:
+	fprintf(stdout, "= (%lf)\n", p->data.result_double);
+	break;
       default:
         fprintf(stderr, "Undefined data kind(%u)\n", p->data.kind);
         abort();