Merge pull request dotnet/core-setup#3451 from omajid/dirprops-rhel7-future-versions
authorWes Haggard <weshaggard@users.noreply.github.com>
Mon, 27 Nov 2017 19:42:32 +0000 (11:42 -0800)
committerGitHub <noreply@github.com>
Mon, 27 Nov 2017 19:42:32 +0000 (11:42 -0800)
Handle all RHEL 7.x releases as RHEL 7 in dir.props

Commit migrated from https://github.com/dotnet/core-setup/commit/022634c8a4c25ea8d70f3e6d1c694051d9947f67


Trivial merge