Versions defined outside of channels are not returned in find-package -allversions

[carlfischer1]

Currently when the -AllVersions option is used with the find-package cmdlet the provider returns the channel versions defined in the index, but if versions are defined in the versions portion of the index they are not returned.

For example, with an index of

{
    "channels":  {
                     "cs":  {
                                "alias":  "17.06"
                            },
                     "test":  {
                                  "version":  "18.03.1-ee-2"
                              },
                     "17.06":  {
                                   "version":  "17.06.2-ee-15"
                               },
                     "18.03":  {
                                   "version":  "18.03.1-ee-2"
                               }
                 },
    "versions":  {
                     "17.06.2-ee-14":  {
                                           "date":  "2018-06-28T15:42:58",
                                           "url":  "https://dockermsft.blob.core.windows.net/dockercontainer/docker-17-06-2-ee-14.zip",
                                           "size":  "16340562",
                                           "notes":  "Contains Docker EE for use with Windows Server.",
                                           "sha256":  "3619D5FFD9CCD179A37C910404841AFA81A2DAD26B00735AB15C69E6D682EF63"
                                       },
                     "18.03.1-ee-1":  {
                                          "date":  "2018-06-28T18:37:37",
                                          "url":  "https://dockermsft.blob.core.windows.net/dockercontainer/docker-18-03-1-ee-1.zip",
                                          "size":  "21787610",
                                          "notes":  "Contains Docker EE for use with Windows Server.",
                                          "sha256":  "EBECAD33DF142FB63B76391CFBD9C9C4FB17D5AEEF5CA126236EBADDAFE86628"
                                      },
                     "17.06.2-ee-15":  {
                                           "date":  "2018-07-16T18:10:39",
                                           "url":  "https://dockermsft.blob.core.windows.net/dockercontainer/docker-17-06-2-ee-15.zip",
                                           "size":  "16340831",
                                           "notes":  "Contains Docker EE for use with Windows Server.",
                                           "sha256":  "75A50974A47434958AD4157FFBF8448B4DD22317376B6291AE6BA7B37F584717"
                                       },
                     "18.03.1-ee-2":  {
                                          "date":  "2018-07-16T18:10:49",
                                          "url":  "https://dockermsft.blob.core.windows.net/dockercontainer/docker-18-03-1-ee-2.zip",
                                          "size":  "21788578",
                                          "notes":  "Contains Docker EE for use with Windows Server.",
                                          "sha256":  "24C9E716D5E86421B89040140E6B03292840E0AE901D039BC5990C706B74557A"
                                      }
                 }
}

find-package will return 3 results instead of 4

PS C:\> find-package docker -provider dockermsftprovider -allversions

Name                           Version          Source           Summary
----                           -------          ------           -------
Docker                         17.06.2-ee-15    DockerDefault    Contains Docker EE for use with Windows Server.
Docker                         18.03.1-ee-2     DockerDefault    Contains Docker EE for use with Windows Server.
Docker                         18.03.1-ee-2     DockerDefault    Contains Docker EE for use with Windows Server.