Set osx as the os name

Author: Zachary Eisinger

externals/get-os-distro.sh

@@ -113,7 +113,7 @@ get_current_os_name() {
 
     local uname=$(uname)
     if [ "$uname" = "Darwin" ]; then
-        echo "mac"
+        echo "osx"
         return 0
     elif [ "$uname" = "Linux" ]; then
         local linux_platform_name
@@ -139,7 +139,7 @@ get_legacy_os_name() {
 
     local uname=$(uname)
     if [ "$uname" = "Darwin" ]; then
-        echo "mac"
+        echo "osx"
         return 0
     else
         if [ -e /etc/os-release ]; then