Tweak delta file names for better coverage

v6.2.13

fix testcases

Release v6.2.12

• Revert "skip pure renames"

Release v6.2.11

• Skip pure renames for deltas

Release v6.2.10

• Resolve issue of missing files in packs

Release v6.2.9

• Fix handling of logfile option

Release v6.2.8

• Revert no longer necessary delta skipping

Release v6.2.7

• Update test content URL
• Update delta path handling for avx content

Release v6.2.4

This release includes minor bug fixes and enhancements.

- Fix generated warning for delta packs.
- Show upstream-format command in help.
- Remove delta file in case bspatch test fails.
- Update warning message for missing state file.
- Update to GitHub Actions v2.1.0

Release v6.2.3

    This release includes minor bug fixes along with implementation of
    logging.

    Enhancements:
    - Implement the logging package for mixer.
      A common log file can be set for all the mixer commands in the builder.conf. 
      E.g. `mixer config set Mixer.LOG <filepath>`.

      The log file and level can also be set for individual mixer commands using the `--log` 
      and `--log-level` flags respectively. 

      The various log levels are: 
      ERROR (1), WARNING (2), INFO (3), DEBUG (4) and VERBOSE (5). Default log level is 4.

    Other Changes:
    - Remove the --no-publish flag.
      Mixer will now always update the LAST_VER file after `build update`.
    - Update github actions to v2 to handle CI re-runs.
    - Update Makefile to build man pages as a prerequisite for the `build` target.

Release v6.2.2

This release includes performance improvements, minor bug fixes and
removal of the Mixin feature.

Changes:
- Remove the Mixin feature as Mixer now supports creation of 3rd party content.
- Calculate the hash for each file just once.
- Parallelize bundle processing.
- Parallelize bundle file resolving.
- Update mix variables when crossing upstream formats.
- Fix MCA bundle deletion during format bump.
- Add more debug messages for DNF errors.
- Fix permission issue in bat test.
- Replace Travis CI with GitHub Actions.