tests: Add serial console to images we boot in CI

In some cases it will not boot without a console, and the CI framework
defaults to using serial console. So set it on live-iso, qcow2, and the
final iso installed with liveimg.

Related: rhbz#1770193

tests/cli/test_compose_live-iso.sh

@@ -66,7 +66,7 @@ name = "root"
 key = "$PUB_KEY"
 
 [customizations.kernel]
-append = "custom_cmdline_arg"
+append = "custom_cmdline_arg console=ttyS0,115200n8 console=tty0"
 __EOF__
 
         rlRun -t -c "$CLI blueprints push $TMP_DIR/with-ssh.toml"

tests/cli/test_compose_qcow2.sh

@@ -46,7 +46,7 @@ name = "root"
 key = "$PUB_KEY"
 
 [customizations.kernel]
-append = "custom_cmdline_arg"
+append = "custom_cmdline_arg console=ttyS0,115200n8 console=tty0"
 __EOF__
 
         rlRun -t -c "$CLI blueprints push $TMP_DIR/with-ssh.toml"

tests/cli/test_compose_tar_kickstart.sh

@@ -79,7 +79,7 @@ timezone America/New_York
 keyboard us
 rootpw --lock
 sshkey --username root "$PUB_KEY"
-bootloader --location=mbr
+bootloader --location=mbr --append "custom_cmdline_arg console=ttyS0,115200n8 console=tty0"
 zerombr
 clearpart --initlabel --all
 autopart

tests/test_cli.sh

@@ -51,7 +51,7 @@ function setup_tests {
     cat >> $blueprints_dir/example-http-server.toml << __EOF__
 
 [customizations.kernel]
-append = "custom_cmdline_arg"
+append = "custom_cmdline_arg console=ttyS0,115200n8 console=tty0"
 __EOF__
 }