REGTEST: vtest can now enable mcli with its own flag

VTest can now enable mworker and mcli with separate flags so lets
update vtc files that need it. This also allows to revert the change
made with 1545a59c ("REGTESTS: make seamless-reload depend on 1.9
and above").

reg-tests/mcli/mcli_show_info.vtc

@@ -8,7 +8,7 @@ feature ignore_unknown_macro
 server s1 {
 } -start
 
-haproxy h1 -W -conf {
+haproxy h1 -W -S -conf {
     global
         nbproc 4
     defaults

reg-tests/seamless-reload/abns_socket.vtc

@@ -11,9 +11,6 @@
 varnishtest "Seamless reload issue with abns sockets"
 feature ignore_unknown_macro
 
-# expose-fd is available starting at version 1.8, but vtest requires the
-# master CLI, available in 1.9 and above.
-#REQUIRE_VERSION=1.9
 # abns@ sockets are not available on freebsd
 #EXCLUDE_TARGETS=freebsd,osx,generic
 #REGTEST_TYPE=bug