Add ansible_httpapi_use_proxy: false to the generated ansible inventory

[hellt]

Since clab generated inventory assumes that the HTTP client that uses it resides on the same host, we have to add ansible_httpapi_use_proxy: false variable to the inventory to make sure we instruct the module to not attempt using global proxy if it is configured.

A comment should be added next to this var explaining this.

[steiler]

is this what you would expect?
Like vars under all or should it be different?

all:
  vars:
    # The generated inventory is assumed to be used from the clab host.
    # Hence no http proxy should be used. Therefore we make sure the http 
    # module does not attempt using any global http proxy.
    ansible_httpapi_use_proxy: false
  children:
    linux:
      hosts:
        clab-host-link-l1:
          ansible_host: 172.20.20.2

[hellt]

yes, thanks