[datadog_synthetics_test] Add always_execute and exit_if_succeed to browser steps
#5371
| Job | Run time |
|---|---|
| 1m 47s | |
| 14s | |
| 16m 42s | |
| 16m 43s | |
| 16m 46s | |
| 16m 42s | |
| 16m 26s | |
| 1h 25m 20s |