No changes during upgrade or locked system/client (#4674)
No changes during upgrade or locked system/client (#4674)

In addition to the client setting (repository objects modifiable or not, scc4), abapGit will not allow changes to any local objects, if

- system is set to "not modifiable" (se03)
- system is running an upgrade
- system is a shadow system

Closes #4267

Co-authored-by: Lars Hvam <721d1b171982cd84b755f6b25130d2b88cd1f696@hotmail.com>
larshp/abapGit,larshp/abapGit,sbcgua/abapGit,sbcgua/abapGit