update planner for revised 5.0 replica catalog format

Related to PM-1546

the new agreed format looks like.
pegasus: "5.0"
replicas:
  - lfn: f1
    pfns:
      - site: local
        url: /path/to/file
      - site: condorpool
        url: /path/to/file
    checksum:
      sha256: abc123
    metadata:
      owner: ryan
      size: 1024
      k: v

  - lfn: f2
    pfns:
      - site: local
        url: /path/to/file
      - site: condorpool
        url: /path/to/file
    checksum:
      sha256: 991232132abc
    metadata:
      owner: pegasus
      size: 1024
      k: v
      abc: 123

  - lfn: .*\.gz
    pfns:
      - site: local
        url: input/mono/[0]
    // cant have checksum
    metadata:
      owner: pegasus
    regex: true