[BUG] Needle in PR #66 breaks minimal install when `GRUB="ip=dhcp"` is not set

[tcooper]

Describe the bug
The needle added in #66 to resolve _boot_to_anaconda issue in text install is not specific enough and also matches when using dvd-iso with a server based install and no network connection is required. In that case the test passes until the final stage where network access is required for _collect_data. Without network enabled _collect_data is a hard failure.

To Reproduce
Steps to reproduce the behavior:

1. Clone repo and/or update latest devel branch to include #66
2. POST the standard minimal case
3. Installation will succeed but _collect_data will fail with no network access to upload results to openQA.

Expected behavior
Network interface should ALWAYS be enabled and minimal test should complete regardless of whether a GRUB=... variable is configured to preset the network interface connection (or not).

Desktop (please complete the following information):

• OS: Fedora 34 Server with openQA
• Browser: Chrome 96.0.4664.5
• Version: This repo at 33dd37f

Additional context
It appears only a fix to the needle to make it more specific is required and additional logic in _anaconda_network_enable.pm is not required.