Add hs-ipv6 to the chutney IPv6 tests

Requires a recent version of chutney.

Also remove bridges+hs, as it's somewhat redundant.

changes/feature20069

@@ -0,0 +1,6 @@
+  o Minor feature (testing, ipv6):
+    - Add the hs-ipv6 chutney target to make test-network-all's IPv6
+      tests. Remove bridges+hs, as it's somewhat redundant.
+      This requires a recent chutney version that supports IPv6 clients,
+      relays, and authorities.
+      Closes ticket 20069; patch by teor.

src/test/include.am

@@ -28,9 +28,9 @@ TESTS += src/test/test src/test/test-slow src/test/test-memwipe \
 	$(TESTSCRIPTS)
 
 # These flavors are run using automake's test-driver and test-network.sh
-TEST_CHUTNEY_FLAVORS = basic-min bridges-min hs-min bridges+hs
+TEST_CHUTNEY_FLAVORS = basic-min bridges-min hs-min
 # only run if we can ping6 ::1 (localhost)
-TEST_CHUTNEY_FLAVORS_IPV6 = bridges+ipv6-min ipv6-exit-min
+TEST_CHUTNEY_FLAVORS_IPV6 = bridges+ipv6-min ipv6-exit-min hs-ipv6
 # only run if we can find a stable (or simply another) version of tor
 TEST_CHUTNEY_FLAVORS_MIXED = mixed