Fix 99 move host

[lgetwan]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: #99
When a host was modified and stayed in the same folder, an
Error calling API. HTTP code 400. Details: b'{"title": "Invalid move action", "status": 400, "detail": "The host is already part of the specified target folder"}'
Was raised.

What is the new behavior?

• The module can now handle changing host attributes while the host remains in the same folder.

Other information

[lgetwan]

@robin-tribe29: Not sure why the "Tests for roles" are failing.
I fixed #99 with this PR. Can you do a quick review?

[robin-checkmk]

@robin-tribe29: Not sure why the "Tests for roles" are failing. I fixed #99 with this PR. Can you do a quick review?

I am working on new integration tests for roles (#145), so you can ignore the old checks for now.

[robin-checkmk]

For me host creation still fails with the following error, if the host exists:
fatal: [test9.tld -> localhost]: FAILED! => {"changed": false, "msg": "Error calling API. HTTP code 400. Details: b'{\"title\": \"Invalid move action\", \"status\": 400, \"detail\": \"The host is already part of the specified target folder\"}', "}
Other than that all looks good.

[lgetwan]

There was another point in the code where a heading "/" was added. Removed that line. Looks good now in my tests.

[robin-checkmk]

There was another point in the code where a heading "/" was added. Removed that line. Looks good now in my tests.

I'll run a few tests too, but it looks promising now! 🎉
Can you check the open issue, which of them will be solved with this?