test: Rename slightly misleading "valgrind" tests

The "valgrind" test cases are designed to pick up errors reported when
passt is running under valgrind.  But what it actually does is just kill
the passt process, then see if it had a non-zero exit code.  That means it
will equally well pick up any other problems which caused passt to exit
with an error status: either something detected within passt or as a result
of passt being killed by an unexpected signal.

The fact that the "valgrind" test is actually responsible for shutting down
the passt process is non-obvious and can lead to problems when selectively
running tests during debugging.

Rename the "valgrind" tests to "shutdown" tests and run it regardless of
whether we're using valgrind or not.  This allows us to remove an ugly
speacial case in the passt_in_ns teardown code.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

test/lib/setup

@@ -317,8 +317,6 @@ teardown_passt_in_ns() {
 	pane_wait GUEST
 	tmux send-keys -t ${PANE_GUEST} "C-d"
 
-	[ ${VALGRIND} -eq 0 ] && tmux send-keys -t ${PANE_PASST} "C-c"
-	[ ${VALGRIND} -eq 0 ] && pane_status GUEST
 	tmux send-keys -t ${PANE_PASST} "C-d"
 
 	pane_wait GUEST

test/run

@@ -84,7 +84,7 @@ run() {
 	test dhcp/passt
 	test tcp/passt
 	test udp/passt
-	test valgrind/passt
+	test shutdown/passt
 	teardown passt
 
 	VALGRIND=1
@@ -94,7 +94,7 @@ run() {
 	test icmp/passt_in_ns
 	test tcp/passt_in_ns
 	test udp/passt_in_ns
-	test valgrind/passt_in_ns
+	test shutdown/passt_in_ns
 	teardown passt_in_ns
 
 	VALGRIND=0
@@ -105,6 +105,7 @@ run() {
 	test perf/passt_udp
 	test perf/pasta_tcp
 	test perf/pasta_udp
+	test shutdown/passt_in_ns
 	teardown passt_in_ns
 
 	setup two_guests

test/shutdown/passt

@@ -6,16 +6,17 @@
 # PASTA - Pack A Subtle Tap Abstraction
 #  for network namespace/tap device mode
 #
-# test/valgrind/passt - Terminate passt and check valgrind exit code
+# test/shutdown/passt - Shut down passt and check exit code (will detect
+#                       valgrind errors amongst others)
 #
 # Copyright (c) 2022 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio@redhat.com>
 
-test	valgrind: exit code
+test	shutdown: exit code
 
 hout	PASST_PID cat passt.pid
 host	kill __PASST_PID__
 sleep	1
 
-pout	VALGRIND_EXIT echo $?
+pout	EXIT echo $?
-check	[ "__VALGRIND_EXIT__" = "0" ]
+check	[ "__EXIT__" = "0" ]

test/shutdown/passt_in_ns

@@ -6,16 +6,17 @@
 # PASTA - Pack A Subtle Tap Abstraction
 #  for network namespace/tap device mode
 #
-# test/valgrind/passt_in_ns - Terminate passt and check valgrind exit code
+# test/shutdown/passt_in_ns - Shut down passt and check exit code (will detect
+#                             valgrind errors amongst others)
 #
 # Copyright (c) 2022 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio@redhat.com>
 
-test	valgrind: exit code
+test	shutdown: exit code
 
 nsout	PASST_PID cat passt.pid
 ns	kill __PASST_PID__
 sleep	1
 
-pout	VALGRIND_EXIT echo $?
+pout	EXIT echo $?
-check	[ "__VALGRIND_EXIT__" = "0" ]
+check	[ "__EXIT__" = "0" ]