fix network doctor test

Summary: Fixes a test that was broken on macOS, causing hgbuild to fail.

Reviewed By: muirdm

Differential Revision: D75962516

fbshipit-source-id: 9999792324e54ac605df1452d203649e9f2af29b

Author: MichaelCuevas

eden/scm/tests/test-network-doctor.t

@@ -36,7 +36,7 @@ Set up fake cert paths so we don't hit "missing certs" error.
     no server connectivity: TCP error: test
 
   Original error:
-  [6] Couldn't resolve host name (Could not resolve host: test_fail)
+  \[6\] (Could not|Couldn't) resolve (hostname|host name) \(Could not resolve host: test_fail\) (re)
   [1]
 
 
@@ -53,9 +53,9 @@ Works for native rust commands as well.
 
   Original error:
 
-  Network Error: [6] Couldn't resolve host name (Could not resolve host: test_fail)
+  Network Error: \[6\] (Could not|Couldn't) resolve (hostname|host name) \(Could not resolve host: test_fail\) (re)
 
   Caused by:
-      [6] Couldn't resolve host name (Could not resolve host: test_fail)
+      \[6\] (Could not|Couldn't) resolve (hostname|host name) \(Could not resolve host: test_fail\) (re)
 
   Stack backtrace: