Merge pull request dotnet/core-setup#2159 from ramarag/fix_portable

Fixing portable linux and removing various linux builds

Commit migrated from https://github.com/dotnet/core-setup/commit/946381eecbb557e8252e4ddc2575ef1c29a91955

src/installer/netci.groovy

@@ -10,7 +10,7 @@ def project = GithubProject
 def branch = GithubBranchName
 def isPR = true
 
-def platformList = ['Debian8.2:x64:Debug', 'PortableLinux:x64:Release', 'Ubuntu:arm:Release', 'Ubuntu:x64:Release', 'Ubuntu16.04:arm:Release', 'Ubuntu16.04:x64:Release', 'Ubuntu16.10:x64:Release', 'OSX10.12:x64:Release', 'Windows_NT:x64:Release', 'Windows_NT:x86:Debug', 'Windows_NT:arm:Debug', 'RHEL7.2:x64:Release', 'CentOS7.1:x64:Debug', 'Fedora24:x64:Debug', 'OpenSUSE42.1:x64:Debug']
+def platformList = ['Debian8.2:x64:Debug', 'PortableLinux:x64:Release', 'Ubuntu:arm:Release', 'Ubuntu:x64:Release', 'Ubuntu16.04:arm:Release', 'Ubuntu16.04:x64:Release', 'Ubuntu16.10:x64:Release', 'OSX10.12:x64:Release', 'Windows_NT:x64:Release', 'Windows_NT:x86:Debug', 'Windows_NT:arm:Debug', 'Fedora24:x64:Debug', 'OpenSUSE42.1:x64:Debug']
 
 def static getBuildJobName(def configuration, def os, def architecture) {
     return configuration.toLowerCase() + '_' + os.toLowerCase() + '_' + architecture.toLowerCase()
@@ -64,7 +64,7 @@ platformList.each { platform ->
         if (os == 'PortableLinux') {
 
             // Trigger a portable Linux build that runs on RHEL7.2
-            buildCommand += " --portableLinux"
+            buildCommand += " -portable"
             osForGHTrigger = "PortableLinux"
             os = "RHEL7.2"
         }