Fix .htaccess-lando not being read when present.

Apache looks for `.htaccess` files in the order listed in `AccessFileName`,
reading only the first one it finds. Lando is supposed to change that
list, but it isn't working. See:
https://github.com/lando/lando/issues/2277
This project needs the updated `AccessFileName` list so the `.htaccess`
file on the server can include Shibboleth statements that will cause
errors in Lando, while the local, Lando-specific file, excludes them.

.lando.yml

@@ -5,6 +5,8 @@ config:
 
 services:
   appserver:
+    build_as_root:
+      - .lando/fix-htaccess-file.sh
     build:
       - git submodule init
       - git submodule update

.lando/fix-htaccess-file.sh

@@ -0,0 +1,10 @@
+#/bin/sh
+
+# This loads an alternate htaccess file, `.htaccess-lando` if it is present.
+# The change is supposed to be made by core lando, but is failing. See:
+# https://github.com/lando/lando/issues/2277
+
+echo "Checking for AccessFileName in /etc/apache2/apache2.conf..."
+if [ -e /etc/apache2/apache2.conf ]; then
+	sed -i 's/AccessFileName .htaccess/AccessFileName .htaccess-lando .htaccess/g' /etc/apache2/apache2.conf
+fi