[BUG] Regression - Running python ./splunk_eventgen/__main__.py generate splunk_eventgen/README/eventgen.conf.tutorial1 failed

[li-wu]

Description
Running python ./splunk_eventgen/__main__.py generate splunk_eventgen/README/eventgen.conf.tutorial1 for develop branch failed.

To Reproduce
Directly run python ./splunk_eventgen/__main__.py generate splunk_eventgen/README/eventgen.conf.tutorial1.

Expected behavior
Give events output.

Actual behavior
Error throw:

  File "./splunk_eventgen/__main__.py", line 25, in <module>
    EVENTGEN_VERSION = splunk_eventgen_init.__version__
AttributeError: 'module' object has no attribute '__version__'

Sample files and eventgen.conf file
splunk_eventgen/README/eventgen.conf.tutorial1

Additional context
This is caused by the the pep8 pull request here:
https://github.com/splunk/eventgen/pull/151/files#diff-afc41a2be8638faf5aa07904e026e238R17

When moving import eventgen_core to the front which inserts splunk_eventgen/lib to the front of sys.path. Then the import __init__ as splunk_eventgen_init imports splunk_eventgen/lib/__init__.py which is not expected.

[jmeixensperger]

Tested fix locally with reproduction steps.