fix distro name

Summary: Missed this when switching from spaces to underscores in distro names

Reviewed By: krallin

Differential Revision: D32693527

fbshipit-source-id: 658504d76c96defd3f1a217ada8b05f99c841ede

build/fbcode_builder/getdeps/platform.py

@@ -99,7 +99,7 @@ class HostType(object):
     def get_package_manager(self):
         if not self.is_linux():
             return None
-        if self.distro in ("fedora", "centos", "centos stream"):
+        if self.distro in ("fedora", "centos", "centos_stream"):
             return "rpm"
         if self.distro.startswith(("debian", "ubuntu")):
             return "deb"