Logan V af30c978bd Allow sourcing apt_key from URL
Allow deployers to specificy a remote URL to download apt signing
keys from.

Example:
galera_client_gpg_keys:
  - key_name: 'mariadb'
    url: "https://some.webserver.com/mariadb.gpg"
    fallback_url: "https://other.webserver.com/mariadb.gpg"
    hash_id: '0xcbcb082a1bb943db'
  - key_name: 'percona-xtrabackup'
    keyserver: 'hkp://keyserver.ubuntu.com:80'
    fallback_keyserver: 'hkp://p80.pool.sks-keyservers.net:80'
    hash_id: '0x1c4cbdcdcd2efd2a'

Change-Id: I781cb8f5744c4e1e8e728a8ad308d135d2e5922c
2016-01-22 11:39:06 -06:00
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