ast-db-manage/cdr/env.py: Don't fail if a config file can't be loaded

When generating SQL files via the repotools alembic_creator.py script, a
configuration object is used programatically with SQLAlechemy, as opposed to
a configuration file. This patch ignores failures to interpret a config file,
as ... there isn't one in this case.


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@414763 f38db490-d61c-443f-a65b-d21fe96a405b
AMI/ARI: Update version numbers

Update the semantic versioning of ARI to 1.3.0 and AMI to 2.3.0 to account for
backwards compatible changes going from 12.2.0 to 12.3.0.


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@414765 f38db490-d61c-443f-a65b-d21fe96a405b