Signal handling - SIGTERM will stop calculation and force file saving #6997

Job	Run time
Build SU2 (BaseMPI)	20m 39s
Build SU2 (ReverseMPI)	14m 24s
Build SU2 (ForwardMPI)	20m 29s
Build SU2 (BaseNoMPI)	8m 8s
Build SU2 (ReverseNoMPI)	12m 42s
Build SU2 (tsan) (BaseOMP-tsan)	19m 17s
Build SU2 (ForwardNoMPI)	13m 39s
Build SU2 (tsan) (ReverseOMP-tsan)	27m 56s
Build SU2 (BaseOMP)	11m 26s
Build SU2 (ReverseOMP)	15m 14s
Build SU2 (ForwardOMP)	16m 1s
Unit Tests (test_driver)	1m 21s
Regression Tests (vandv.py)	3m 28s
Unit Tests (test_driver_AD)	1m 13s
Regression Tests (tutorials.py)	4m 41s
Unit Tests (test_driver_DD)	1m 3s
Regression Tests (parallel_regression.py)	18m 39s
Regression Tests (parallel_regression_AD.py)	7m 42s
Regression Tests (serial_regression.py)	15m 38s
Regression Tests (serial_regression_AD.py)	6m 56s
Regression Tests (hybrid_regression.py)	15m 47s
Regression Tests (hybrid_regression_AD.py)	5m 42s
Thread Sanitizer Tests (hybrid_regression.py)	25m 53s
Thread Sanitizer Tests (hybrid_regression_AD.py)	15m 48s
	5h 3m 46s

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