[Build System] DEBS_DEPENDS does not automatically install the relevant package in case of .whl dependent on a Debian package

[gpunathilell]

Description

When a .whl file is dependent on a debian package the debian package is not automatically installed as part of the image generated for switch deployment
Example:
In rules/sonic-yang-models-py3.mk:
SONIC_YANG_MODELS_PY3 has deb dependency on LIBYANG
In files/build_templates/sonic_debian_extension.j2:
LIBYANG is explicitly installed (even though the dependency is specified)

Steps to reproduce the issue:

1. Build a switch image (on any platform) with a *.whl dependency on a .deb file (which is otherwise not present in the image)
2. The build should succeed, deploy the image on a switch
3. Confirm The .deb file is not explicitly installed.

Describe the results you received:

Describe the results you expected:

By specifying the _DEBS_DEPENDS rule the debian should be automatically installed