Adding Ubuntu 14.04 and 'OSConfig for MC' policy packages build workflow

[AhmedBM]

Description

• Added Ubuntu 14.04 Trusty build support (GCC 4.8) for building Machine Configuration policy packages
• Added Publish (GitHub) workflow which doesn't publish just yet but currently builds the MC policy packages for Ubuntu 14.04 Trusty
• Fixed Build Containers workflow to build the specified containers when the distro_list input is provided
• Added a buildForMachineConfiguration input to the package-build.yml workflow to control whether to build the policy packages for MC or Debian/RPM packages
• Renamed the publish.yml workflow to publish-pmc.yml to reflect the the new GItHub publishing variant with PMC

Checklist

• I have read the contribution guidelines.
• All unit tests are passing.
• I have merged the latest main branch prior to this PR submission.
• I submitted this PR against the main branch.

[github-actions]

Test Results

 44 files  ±0   44 suites  ±0   39m 44s ⏱️ + 1m 16s
  4 tests ±0    4 ✅ ±0   0 💤 ±0  0 ❌ ±0 
176 runs  ±0  154 ✅ ±0  22 💤 ±0  0 ❌ ±0 

Results for commit 5687bbf. ± Comparison against base commit 7c42863.

♻️ This comment has been updated with latest results.

[MariusNi]

revoking review

[MariusNi]

We need the CI also customized for this. Look out at this failure, for example (we are not building everything here):

-- Configuring incomplete, errors occurred!
See also "/azure-osconfig/build/CMakeFiles/CMakeOutput.log".

Could not find a package configuration file provided by
"azure_c_shared_utility" with any of the following names:

azure_c_shared_utilityConfig.cmake
azure_c_shared_utility-config.cmake

Add the installation prefix of "azure_c_shared_utility" to

[MariusNi]