[build] Check versions availability in rules/*.mk at init and use apt-get source instead of dget or wget in Makefiles

[guillaumelambert]

• create an a apt alternate configuration directory during 'make init'
• use 'apt-get source' instead of dget and wget in makefiles
• adapt packages versions accordingly in rules/XX.mk files
• perform versions check at the make init stage to avoid time and resources waste
  Available versions can be retrieved with 'apt-cache showsrc'
  If target version is no more available, there is no point to pursue the build.
  Cf [build] Fix isc-dhcp full version in rules.mk #13288

SONiC images compilation is currently designed to be performed with a
non-root user under Ubuntu systems.
And the build process recompiles packages for various GNU+Linux Debian
distributions.
As a result, there is no guarantee that debian repos are declared in
/etc/apt/sources.list on the Ubuntu host system used.
And 'apt-get source' can not be directly used out-of-the-box.
Currently, the packages sources are retrieved from more or less official URLs
and locations with dget and wget.
As discussed in the following URL
https://serverfault.com/questions/447457/use-apt-get-source-on-a-debian-repo-without-using-etc-apt-source-list
dget is the simplest solution but this approach has several drawbacks from a
maintenance and security standpoint, for example :

• maintaining manually these URLS since they can be removed by external
  sites owners
  [Build] Failed to build isc dhcp #13281
• loose authentication of packages sources retrieved with HTTP instead of HTTPS potentially vulnerable to MITM at least for wget

A more complex solution is proposed (on the same URL at serverfault) and address these
drawbacks by using an alternate apt configuration directory that is writable
by non-root user. This PR leverages this solution and allows here to:

• identify packages sources with official Debian Keyring GPG signatures
• use 'apt-get source <pkgsrc_name>' to retrieve packages without maintaining
  several specific URLs
• use 'apt-cache showsrc <pkgsrc_name>' to retrieve a
  list of available versions to ckeck packages availability during the
  'make init' phase
  If no candidate version is available, the script will exit with an error code and stops the whole compilation process.
  This will prevent starting a long build process condemned to fail and thus spare precious time and computing resources.

Issue #13281

Which release branch to backport (provide reason below if selected)

potentially all

Description for the changelog

[build] Check versions availability in rules/*.mk at init and use apt-get source instead of dget or wget in Makefiles

A picture of a cute animal (not mandatory but encouraged)

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[guillaumelambert]

Builds themselves were OK.
It seems previous CI run was KO because there was an issue in the queue to lock one of the testbed.
https://dev.azure.com/mssonic/build/_build/results?buildId=203972&view=logs&j=90badf3f-7a57-5c0e-d9bd-d2e7a4fde36a&t=bc4195ad-8694-52a1-21a3-01785e725d8d