Automatic update for anaconda-34.3-1.eln103.

Changelog

* Tue Sep  1 2020 Martin Kolman <mkolman@redhat.com> - 34.3-1
- Move slower part of Subscription spoke initialization to a thread (mkolman)
- Add test to detect every RW mount command in Dracut (jkonecny)
- subscription: Convert the RHSM default config values to expected format
  (mkolman)
- Implement get_source_proxy() in payload base class (mkolman)
- Use spec file macros for all requires version specifications (jkonecny)
- Fix spec macro for version name (jkonecny)
- Correctly work with package boolean logic in our setup scripts (jkonecny)
- Wait for payload initialization to finish in Subscription spoke (mkolman)
- Unify usage of BootLoaderArguments add() & update() (vslavik)
- Rename Arguments to BootLoaderArguments (vslavik)
- Remove usage of OrderedSet (vslavik)
- Add tests for the boot loader Arguments class (vslavik)
- Do not mount as RW in Dracut (jkonecny)
- network: do not crash when updating a connection without wired settings
  (rvykydal)
- Fix traceback when removing additional repository (jkonecny)
- subscription: Handle cases where CDN should not be the default (mkolman)
- subscription: Set DNF payload source via config file option (mkolman)
- subscription: Manual CDN selection support (mkolman)
- subscription: Handle source switching at registration/unregistration
  (mkolman)
- subscription: Introduce the default_source configuration option (mkolman)
- Use "raise from" to link exceptions (vslavik)
- Fix branching documentation (mkolman)
- Change keyboard ordering to US layout first, 'native' second. Resolves:
  rhbz#1039185 (suanand)
- Remove docs where we tell users that inst. prefix is not required (jkonecny)
- Print warning for boot options without inst. prefix (jkonecny)
- Add missing dracut commands as missing inst. prefix warning (jkonecny)
- Enable warning when inst. prefix is not used (jkonecny)
- Reset the state of the custom partitioning spoke (vponcova)
- Reset the RAID level of the device request (#1828092) (vponcova)
- Protect all devices with the iso9660 file system (vponcova)
- Don't ignore NVDIMM devices with the iso9660 file system (vponcova)
- Add tests for the DBus method FindOpticalMedia (vponcova)
- Fix everything in payload should be mounted as read only (jkonecny)
- Add support for mount options to device_tree.MountDevice (jkonecny)
- Adapt tests for CDRom for the new inst.stage2 discovery (jkonecny)
- CDRom source should prioritize stage2 device during discover (jkonecny)