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[Merge] lp:~smoser/cloud-init/mirror-rework into lp:cloud-init


The proposal to merge lp:~smoser/cloud-init/mirror-rework into lp:cloud-init has been updated.

Commit Message changed to:

rework package mirror selection

There are several changes here.
 * Datasource now has a 'availability_zone' getter.
 * get_package_mirror_info
   * Datasource convenience 'get_package_mirror_info' that calls
     the configured distro, and passes it the availability-zone
   * distro has a get_package_mirror_info method
   * get_package_mirror_info returns a dict that of name:mirror
     this is to facilitate use of 'security' and 'primary' archive.
   * this supports searching based on templates.  Any template
     that references undefined values is skipped.  These templates
     can contain 'availability_zone' (LP: #1037727)
   * distro's mirrors can be arch specific (LP: #1028501)
 * rename_apt_lists supports the "mirror_info" rather than single mirror
 * generate_sources_list supports mirror_info, and as a result, the
   ubuntu mirrors reference '$security' rather than security (LP: #1006963)
 * remove the DataSourceEc2 specific mirror selection, but instead
   rely on the above filtering, and the fact that 'ec2_region' is only
   defined if the availability_zone looks like a ec2 az.

For more details, see:
Your team cloud init development team is requested to review the proposed merge of lp:~smoser/cloud-init/mirror-rework into lp:cloud-init.