Testing: Installer Requirements (#28)

feat: Testcase documentation for Installer Requirements

Includes the following:
- [x] Media Consistency Verification
- [x] Packages and Installer Sources
- [x] Installation Interfaces
- [x] Minimal Installation
- [x] Kickstart Installation
- [x] Disk Layouts
- [x] Bootloader Disk Selection
- [x] Storage Volume Resize
- [x] Update Image
- [x] Installer Help
- [x] Installer Translations

qa_data_loss_warning.md

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+!!! error "DATA LOSS"
+    **Depending on installer choices this MAY destroy all the data on the test system.**
+    If you choose to complete the installation of the test system any/all data on the system may be lost. Please do not install on a system whose contents you need to keep.

qa_setup_boot_to_media.md

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+1. Obtain access to supported system and hardware class to be installed.
+1. Prepare appropriate media for the selected ISO to be tested.
+    - Example: [QA:Testcase Media USB dd](Testcase_Media_USB_dd.md)
+1. Boot the system from the prepared optical, USB media or virtual device attachment.
+    - Examples: [QA:Testcase Boot Methods Boot ISO](Testcase_Boot_Methods_Boot_Iso.md), [QA:Testcase Boot Methods DVD](Testcase_Boot_Methods_Dvd.md)
+1. In the boot menu select the appropriate option to boot the installer.