[12gevmoller_sim] [EXTERNAL] [JeffersonLab/remoll] 6d3fc7: Bringing in Naz's upstream shield optimizations

[rahmans1]

  Branch: refs/heads/feature-modified-upstream-shield
  Home:   https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=AvYLENMblalKwBmbTEvm3vr7ayPsthpKSO9FcgA4GQk&s=bz1912BASM3Xvyxsnjc2_Q5UZh4OgmntPqqew8POawM&e= 
  Commit: 6d3fc759f59193ddd953285c689193b6b5408e76
      https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll_commit_6d3fc759f59193ddd953285c689193b6b5408e76&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=AvYLENMblalKwBmbTEvm3vr7ayPsthpKSO9FcgA4GQk&s=eMVh7xlwZGf8UxilquDzSPZc520sI8rPsp2Nr7WMGCE&e= 
  Author: Sakib Rahman <rahmans at beluga1.int.ets1.calculquebec.ca>
  Date:   2021-03-12 (Fri, 12 Mar 2021)

  Changed paths:
    A geometry/upstream/inner_upstream_nose_shield_beampipe.gdml
    M geometry/upstream/upstreamBeampipe.gdml
    A geometry/upstream/upstream_nose_shield_beampipe.gdml

  Log Message:
  -----------
  Bringing in Naz's upstream shield optimizations