Enable configuring SAE passwords in hostapd layer

[abeltrano]

Type

• Bug fix
• Feature addition
• Feature update
• Documentation
• Build Infrastructure

Side Effects

• Breaking change
• Non-functional change

Goals

• Enable SAE-based authentication data to be set from the API layer. The upper layers have the bits needs, but the lower layers (WpaController) need to implement the corresponding interface functions to light the functionality up.

Technical Details

*Add IHostapd::SetSaePasswords and IHostapd::AddSaePassword for setting all and adding individual SAE passwords respectively with hostapd.

• Call Hostapd::SetSaePasswords from AccessPointControllerLinux::SetAuthenticationData.
• Update test-cased hostapd.conf file to use CMake install directories instead of being hard-coded.
• Add SAE auth data unit tests.

Test Results

• All unit tests pass.

Reviewer Focus

• None

Future Work

• None

Checklist

• Build target all compiles cleanly.
• clang-format and clang-tidy deltas produced no new output.
• Newly added functions include doxygen-style comment block.