1. CDD: O errata changes
    
    Fixes to missing/incorrect id's in CDD.
    Bug: 66482816
    Test: N/A
    
    Change-Id: I8241e1f96f7bc2c5d9e190e96da87fcb504cde02
    
  2. CDD: Recommend A/B system update support
    
    Bug: 28025906
    
    Change-Id: I30a21ccb405fc2c27461773b4ae4252acd506bc4
    
  3. CDD: Automotive implementations MUST support OTA
    
    Requiring that OTAs are technically feasible in Android
    Automotive implementations ensures that safety, security, and
    other updates can be deployed.
    
    Change-Id: I788fcbf1edf7287477595d4e1bfb05364a5f0b5e
    
  4. Docs: Add CDD docs and the build script, and test examples
    
    Bug: 25199595
    This is based on the amended final CDD for M, hosted as commit
    1846a9622485855d572705a7972116caf0be3669 on the AOSP master branch.
    
    Change-Id: Ic3bd96cd652f7d7b13def03a4ca1f04645c34255