Fix output names of unsteady simulation #8210

Job	Run time
Build SU2 (BaseMPI)	13m 7s
Build SU2 (ReverseMPI)	14m 8s
Build SU2 (ForwardMPI)	11m 41s
Build SU2 (BaseNoMPI)	8m 23s
Build SU2 (ReverseNoMPI)	12m 13s
Build SU2 (ForwardNoMPI)	9m 26s
Build SU2 (BaseOMP)	8m 16s
Build SU2 (ReverseOMP)	14m 53s
Build SU2 (ForwardOMP)	10m 56s
Build SU2 (asan) (BaseNoMPI-asan)	15m 10s
Build SU2 (asan) (ReverseNoMPI-asan)	44m 9s
Build SU2 (tsan) (BaseOMP-tsan)	12m 0s
Build SU2 (tsan) (ReverseOMP-tsan)	27m 4s
Unit Tests (test_driver)	59s
Regression Tests (vandv.py)	2m 27s
Unit Tests (test_driver_AD)	1m 28s
Regression Tests (tutorials.py)	4m 48s
Unit Tests (test_driver_DD)	59s
Regression Tests (parallel_regression.py)	13m 28s
Regression Tests (parallel_regression_AD.py)	9m 12s
Regression Tests (serial_regression.py)	15m 54s
Regression Tests (serial_regression_AD.py)	5m 32s
Regression Tests (hybrid_regression.py)	10m 54s
Regression Tests (hybrid_regression_AD.py)	3m 19s
Thread Sanitizer Tests (hybrid_regression.py)	26m 10s
Thread Sanitizer Tests (hybrid_regression_AD.py)	11m 0s
Address Sanitizer Tests (serial_regression.py)	14m 51s
Address Sanitizer Tests (serial_regression_AD.py)	5m 59s
	5h 28m 26s

Provide feedback