Issue #1300 - nb_inventory injecting a variable as api_endpoint

[bookshark13]

Fixes issue-#1300
allows api_endpoint to be a variable and string

Related Issue

#1300

New Behavior

calls the templar.template module to transform the api_endpoint if referenced as a variable e.g: "{{ fake_var }}"

Contrast to Current Behavior

fake_var: "https://netbox.test.domain.com"
Current behavior for a inventory file is referencing api_endpoint: "{{ fake_var }}"
for the above example you would receive an error to the affect of

[WARNING]: * Failed to parse <location of your netbox plugin> with auto plugin: unknown url type: "{{ fake_var }}/api/status"

this solves that issue and the result is no error and we can see
Fetching: https://netbox.test.domain.com/api/status

Discussion: Benefits and Drawbacks

• This could be beneficial to the plugin as a whole, not everyone has one netbox environment. As well nor do they share domain names. This change allows for dynamically calling the api_endpoint. While also not changing anyones current setup
• I believe there are no real drawbacks for this change. It does not take away functionality. Truly it only increases the way you can call the api_endpoint
• Yes it is backwards-compatible

Changes to the Documentation

N/A

Proposed Release Note Entry

netbox.nb_inventory: api_endpoint option can now take variable calls E.G: api_endpoint: "{{ netbox_url }}"

Double Check

• I have read the comments and followed the CONTRIBUTING.md.
• I have explained my PR according to the information in the comments or in a linked issue.
• My PR targets the devel branch.