caddy-frontend: Set https-only by default to true

As https-only becomes default, tests are adapted in order to follow new
approach, case by case, or the redirect http->https is asserted, or https
access is used instead of http.

software/caddy-frontend/buildout.hash.cfg

@@ -54,7 +54,7 @@ md5sum = f20d6c3d2d94fb685f8d26dfca1e822b
 
 [template-default-slave-virtualhost]
 filename = templates/default-virtualhost.conf.in
-md5sum = b5447e33658b8a81b75275630f9da119
+md5sum = 7e26935bb6daf00d8fc01d97eebc7abd
 
 [template-cached-slave-virtualhost]
 filename = templates/cached-virtualhost.conf.in

software/caddy-frontend/instance-slave-caddy-input-schema.json

@@ -44,7 +44,7 @@
       "type": "string"
     },
     "https-only": {
-      "default": "false",
+      "default": "true",
       "description": "If set to true, http requests will be redirected to https",
       "enum": [
         "false",

software/caddy-frontend/instance-slave-caddy-simplified-input-schema.json

@@ -72,7 +72,7 @@
       "type": "string"
     },
     "https-only": {
-      "default": "false",
+      "default": "true",
       "description": "If set to true, http requests will be redirected to https",
       "enum": [
         "false",

software/caddy-frontend/templates/default-virtualhost.conf.in

@@ -10,7 +10,7 @@
 {%- set enable_h2 = slave_parameter['global_disable_http2'].lower() not in TRUE_VALUES and slave_parameter.get('enable-http2', slave_parameter['enable_http2_by_default']).lower() in TRUE_VALUES %}
 {%- set ssl_proxy_verify = slave_parameter.get('ssl-proxy-verify', '').lower() in TRUE_VALUES %}
 {%- set disabled_cookie_list =  slave_parameter.get('disabled-cookie-list', '').split() %}
-{%- set https_only = slave_parameter.get('https-only', '').lower() in TRUE_VALUES %}
+{%- set https_only = slave_parameter.get('https-only', 'true').lower() in TRUE_VALUES %}
 {%- set slave_type = slave_parameter.get('type', '') %}
 {%- set host_list = server_alias_list %}
 {%- set cipher_list = slave_parameter.get('cipher_list', '').strip() %}