[HDF5TomoScan] add "start_time" and "end_time" properties

3 jobs for fix_20 in 10 minutes and 14 seconds (queued for 6 minutes and 56 seconds)
Status Job ID Name Coverage
  Style
passed #191749
check_style

00:00:18

 
  Test Library
passed #191750
test:python3.7_stretch_pyqt5

00:04:51

 
  Test Notbooks
passed #191751
test:test-tomoscan-tutorials

00:05:04