Shebang replacement

[GregWhiteyBialas]

This PR will fix this issue.

Pretty good explanation of root of this issue is here especially this comment.

Rationale behind deleting shebang instead of changing it to #!/usr/bin/python:

• it will default to #!/usr/bin/python anyway.
• module files aren't executed so no shebang isn't needed, and modules should be treated more like python libraries not executables.
• if any change to interpreter is needed it should be done by using ansible_python_interpreter variable, which this PR made possible.

Any contribution and comment is welcomed.

[TerryHowe]

I think the idea was to change the shebang, not remove it.

[GregWhiteyBialas]

Ok, I changed shebang instead of removing it.

(edit: typo)

[GregWhiteyBialas]

I have also renamed this PR so it better reflects changes that are made.

[nyetwurk]

Hey all, this breaks folks who use python venv

[nyetwurk]

This is very broken, as there is no way to install hvac without pip on alpine

https://hvac.readthedocs.io/en/stable/overview.html#installation

There does not seem to be an py3-hvac alpine package.