[RTADPA BW Tests] New Sprucing bandwidth test using latest-available HLT2 input.

related to: lhcb-datapkg/PRConfig!361 (merged) + lhcb-core/LHCbPR2HD!270 (merged) + lhcb-core/LHCbNightlyConf!1121 (merged)

Adds new sprucing qmt and sprucing-job-config for latest BW test job.
Updates the BW qmts restriction to detdesc to be in CMakeLists to better match convention.

ToDo:

• BWTesters + DPAWP1
  • Shunan Approved
• CI-test (in parallel)
• DmitryPopov's magic step post-merge # Requested

Hlt/Hlt2Conf/tests/options/bandwidth/spruce_bandwidth_input_latest.py

@@ -9,7 +9,7 @@
 # or submit itself to any jurisdiction.                                       #
 ###############################################################################
 '''
-Configure input files for the Sprucing bandwidth test on 'previous-hlt2'
+Configure input files for the Sprucing bandwidth test on 'latest'
 
 This is needed for the qmtest in Moore.
 For the test in LHCbPR, the input files are configured by