Sharing Groups

- addresses parts of oasis-tcs#705
- add new files into bind.txt

csaf_2.1/prose/edit/etc/bind.txt

@@ -67,6 +67,10 @@ tests-01-mndtr-33-multiple-flags-with-vex-justification-codes-per-product.md
 tests-01-mndtr-34-branches-recursion-depth.md
 tests-01-mndtr-35-contradicting-remediations.md
 tests-01-mndtr-36-contradicting-product-status-remediation-combination.md
+tests-01-mndtr-39-non-public-sharing-group-with-max-uuid.md
+tests-01-mndtr-40-public-sharing-group-with-no-max-uuid.md
+tests-01-mndtr-41-invalid-sharing-group-name.md
+tests-01-mndtr-42-missing-sharing-group-name.md
 tests-02-optional.md
 tests-03-informative.md
 distributing.md