add random masterpass for sogo admin login

add required headers for sogo proxy auth with password
add SOGoEncryptionKey
add SOGoTrustProxyAuthentication only conditionally if feature is enabled

data/conf/nginx/templates/sogo.auth_request.template.sh

@@ -1,8 +1,10 @@
 if printf "%s\n" "${ALLOW_ADMIN_EMAIL_LOGIN}" | grep -E '^([yY][eE][sS]|[yY])+$' >/dev/null; then
     echo 'auth_request /sogo-auth-verify;
-auth_request_set $user $upstream_http_x_username;
-proxy_set_header x-webobjects-remote-user $user;
-if ($args ~* (.*)(account=(?!0))(.*)) {
-  return 401;
-}'
+auth_request_set $user $upstream_http_x_user;
+auth_request_set $auth $upstream_http_x_auth;
+auth_request_set $auth_type $upstream_http_x_auth_type;
+proxy_set_header x-webobjects-remote-user "$user";
+proxy_set_header Authorization "$auth";
+proxy_set_header x-webobjects-auth-type "$auth_type";
+'
 fi

data/conf/sogo/sogo.conf

@@ -82,6 +82,4 @@
   //SOGoUIxDebugEnabled = YES;
   //WODontZipResponse = YES;
     WOLogFile = "/dev/sogo_log";
-
-    SOGoTrustProxyAuthentication = YES;
 }