test: Split setup/teardown functions for build and distro tests

Currently the build tests and distro tests share a common setup function.
That works for now, but changes we want to make will mean they need
slightly different setup, so split the setup functions in preparation.

Currently, neither build nor distro tests have any teardown function.
Again, future changes are going to mean we need to do some teardown, so
create some empty for now teardown functions in preparation.

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

test/lib/setup

@@ -23,6 +23,11 @@ setup_build() {
 	layout_host
 }
 
+# setup_distro() - Set up pane layout for distro tests
+setup_distro() {
+	layout_host
+}
+
 # setup_passt() - Start qemu and passt
 setup_passt() {
 	layout_passt
@@ -281,6 +286,16 @@ setup_two_guests() {
 	pane_status GUEST_2
 }
 
+# teardown_build() - Nothing to do, yet
+teardown_build() {
+    :
+}
+
+# teardown_distro() - Nothing to do, yet
+teardown_distro() {
+    :
+}
+
 # teardown_passt() - Kill qemu, remove passt PID file
 teardown_passt() {
 	tmux send-keys -t ${PANE_GUEST} "C-c"

test/run

@@ -63,10 +63,14 @@ run() {
 	test build/all
 	test build/cppcheck
 	test build/clang_tidy
+	teardown build
+
+	setup distro
 	test distro/debian
 	test distro/fedora
 	test distro/opensuse
 	test distro/ubuntu
+	teardown distro
 
 	setup pasta
 	test ndp/pasta