Don't remediate when it is inappropriate

Don't remediate when the config file already contains the include
directive.

linux_os/guide/services/ssh/ssh_server/sshd_use_directory_configuration/bash/shared.sh

@@ -1,12 +1,15 @@
 # platform = multi_platform_all
 
 {{% set target_file = "/etc/ssh/sshd_config.d/sshd_config_original.conf" -%}}
+{{% set base_config = "/etc/ssh/sshd_config" -%}}
 if test -f {{{ target_file}}}; then
 	{{{ die("Remediation probably already happened, '" ~ target_file ~ "' already exists, not doing anything.", action="false") }}}
+elif grep -Eq '^\s*Include\s+/etc/ssh/sshd_config\.d/\*\.conf' {{{ base_config }}} && ! grep -Eq '^\s*Match\s' {{{ base_config }}}; then
+	{{{ die("Remediation probably already happened, '" ~ base_config ~ "' already contains the include directive.", action="false") }}}
 else
 	mkdir -p /etc/ssh/sshd_config.d
-	mv /etc/ssh/sshd_config {{{ target_file }}}
-cat > /etc/ssh/sshd_config << EOF
+	mv {{{ base_config }}} {{{ target_file }}}
+cat > {{{ base_config }}} << EOF
 # To modify the system-wide sshd configuration, create a  *.conf  file under
 #  /etc/ssh/sshd_config.d/  which will be automatically included below