Why I did it
Fix host image debian package version issue.
The package dependencies may have issue, when some of debian packages of the base image are upgraded. For example, libc is installed in base image, but if the mirror has new version, when running "apt-get upgrade", the package will be upgraded unexpected. To avoid such issue, need to add the versions when building the host image.
How I did it
The package versions of host-image should contain host-base-image.
Why I did it
Fix some of the version files not used issue.
One of example version file version-py3-all-armhf, when building marvell-armhf, the version is used as expected, but it not use.
py2/py3/deb packages names are case insensitive, and the versions map
key should be the same for packages whose name can have different cases.
For example, in files/build/versions/default/versions-py3, package
"click==7.1.2" is pinned; and in
files/build/versions/dockers/docker-sonic-vs/versions-py3, package
"Click==7.0" is pinned.
Without this fix, the aggregated versions-py3 file used for building
docker-sonic-vs looks like below:
...
click==7.1.2
Click==7.0
...
However, we actually want "click==7.0" to overwrite "click==7.1.2" for
docker-sonic-vs build.
