python files in splunklib/modularinput have 775 permissions

[gjanders]

Other files have 644 and the execute permission results in failing to pass app inspect.

These files are 755 in the tar.gz file, would it be possible to fix this in the next version?

Thanks

[shakeelmohamed]

Thanks @gjanders, can you make a PR for this?

[shakeelmohamed]

#290