nextcloud: add missing monitor-htpasswd section

this seems to cause:
  Installing Computer Partition TestNextCloudParameters-0...
  Falling back to default buildout '/tmp/slaps/soft/8d7d1f38e7c55201a8be65b75e827d7b/bin/buildout'
  Uninstalling dynamic-template-lamp.
  Uninstalling slap-configuration.
  Installing slap-configuration.
  Installing dynamic-template-lamp.
  Installing switch_softwaretype.
  While:
    Installing.
    Getting section publish-connection-information.
    Initializing section publish-connection-information.
    Getting option publish-connection-information:monitor-setup-url.
    Getting section monitor-publish-parameters.
    Initializing section monitor-publish-parameters.
    Getting option monitor-publish-parameters:monitor-base-url.
    Getting section monitor-base.
    Initializing section monitor-base.
    Getting option monitor-base:base-url.
    Getting section monitor-conf-parameters.
    Initializing section monitor-conf-parameters.
    Getting option monitor-conf-parameters:base-url.
    Getting section monitor-instance-parameter.
    Initializing section monitor-instance-parameter.
    Getting option monitor-instance-parameter:monitor-base-url.
    Getting section monitor-frontend-promise.
    Initializing section monitor-frontend-promise.
    Getting option monitor-frontend-promise:config-url.
    Getting option monitor-frontend-promise:url.
    Getting section monitor-frontend.
    Initializing section monitor-frontend.
    Getting option monitor-frontend:config-url.
    Getting section monitor-httpd-conf-parameter.
    Initializing section monitor-httpd-conf-parameter.
    Getting option monitor-httpd-conf-parameter:htpasswd-file.
    Getting section httpd-monitor-htpasswd.
    Initializing section httpd-monitor-htpasswd.
    Getting option httpd-monitor-htpasswd:command.
    Getting option monitor-instance-parameter:password.
  Error: Referenced option does not exist: monitor-htpasswd passwd
  While:
    Installing switch_softwaretype

software/nextcloud/nextcloud-instance.cfg.in

@@ -180,6 +180,12 @@ command-line = ${instance-parameter:php-bin} -c ${php.ini-conf:rendered}
 admin-user = ${instance-parameter:admin-user}
 admin-password = ${instance-parameter:admin-password}
 
+[monitor-htpasswd]
+recipe = slapos.cookbook:generate.password
+storage-path = ${directory:etc}/.monitor_user
+bytes = 8
+username = admin
+
 [slap-parameter]
 instance.mail-from = Nextcloud
 instance.mail-domain = nextcloud@example.com

software/nextcloud/software.cfg

@@ -36,7 +36,7 @@ recipe = slapos.recipe.template:jinja2
 template = ${:_profile_base_location_}/nextcloud-instance.cfg.in
 rendered = ${buildout:directory}/instance-nextcloud.cfg
 extensions = jinja2.ext.do
-md5sum = 59e9c65e655cf9cf144d97dd36863ede
+md5sum = 2a3d766f4aa3285e9dfed32bf215bd8f
 context = 
           key gzip_location          gzip:location
           key python3_location       python3.6.6:location