feat: dnf tries to install cached rpms and dependencies first

[Devinwong]

What type of PR is this?
/kind feature

What this PR does / why we need it:

• During caching, dnf download will also download the required dependencies now by adding --resolve.
• During provisioning, when dependency RPMs are cached, they are included in the argument list to dnf_install. When no dependency RPM is cached, only the main package RPM is included. And dnf_install will handle installing dependencies from configured repos (downloading from network) as needed.
  • e.g.: kubelet-1.34.0-5.azl3.x86_64.rpm requires containernetworking-plugins. Now we cache both at VHD build time and during provisioning, so dnf install will first try to install kubelet and containernetworking-plugins from local cache.

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version
• commits are GPG signed and Github marks them as verified

Special notes for your reviewer:

Release note:

none

[Devinwong]

[Real world logs]
Before the fix:

+ dnf install -y /opt/kubelet/downloads/kubelet-1.34.0-5.azl3.x86_64.rpm
Last metadata expiration check: 1:08:24 ago on Wed Jan  7 22:07:49 2026.
Dependencies resolved.
============================================================================================
 Package                       Arch    Version       Repository                         Size
============================================================================================
Installing:
 kubelet                       x86_64  1.34.0-5.azl3 @commandline                       22 M
Installing dependencies:
 containernetworking-plugins   x86_64  1.7.1-4.azl3  azurelinux-official-cloud-native   26 M

Transaction Summary
============================================================================================
Install  2 Packages

Total size: 48 M
**Total download size: 26 M**
Installed size: 180 M
Downloading Packages:
containernetworking-plugins-1.7.1-4.azl3.x86_64  55 MB/s |  26 MB     00:00    
--------------------------------------------------------------------------------
Total                                            54 MB/s |  26 MB     00:00     

With this feature:

+ dnf install -y /opt/kubelet/downloads/kubelet-1.34.0-5.azl3.x86_64.rpm /opt/kubelet/downloads/containernetworking-plugins-1.9.0-1.azl3.x86_64.rpm
Last metadata expiration check: 0:54:51 ago on Fri Jan  9 20:37:36 2026.
Dependencies resolved.
================================================================================
 Package                       Arch     Version            Repository      Size
================================================================================
Installing:
 containernetworking-plugins   x86_64   1.9.0-1.azl3       @commandline    27 M
 kubelet                       x86_64   1.34.0-5.azl3      @commandline    22 M

Transaction Summary
================================================================================
Install  2 Packages

Total size: 49 M
Installed size: 183 M
Downloading Packages:
Running transaction check

Note it won't download anything from the internet