test: copy test-ssh.t to test-ssh-bundle1.t

We want to keep both code paths tested. The test is a bit too extensive to
simply introduce dual testing in it so we make a copy for each protocol
version.

tests/test-ssh-bundle1.t

@@ -1,3 +1,11 b''
+This test is a duplicate of 'test-http.t' feel free to factor out
+parts that are not bundle1/bundle2 specific.
+
+  $ cat << EOF >> $HGRCPATH
+  > [experimental]
+  > # This test is dedicated to interaction through old bundle
+  > bundle2-exp = False
+  > EOF
 
 
 This test tries to exercise the ssh functionality with a dummy script