update_nextcloud.sh: determin PHP_VERSION if not given.

conf/update_hostname.conf.sample

@@ -43,6 +43,19 @@ WEBSITE="<site-name-of-cloud-instance>"
 #HTTP_GROUP=
 
 
+# - VHOST_CONFIG_FILE
+# -
+# - Vhost configuration file
+# -
+# - The script will determin the vhost configuration file by trying
+# - the following pathes:
+# -    - /usr/local/apache2/conf/vhosts/${WEBSITE}.conf.php-fpm
+# -    - /usr/local/apache2/conf/vhosts/${WEBSITE}.conf
+# -    - /etc/apache2/sites-enabled/${WEBSITE}.conf
+# -
+#VHOST_CONFIG_FILE=""
+
+
 # - Web base directory 
 # -
 # -    the directory where the documentroot lives
@@ -61,13 +74,15 @@ WEBSITE="<site-name-of-cloud-instance>"
 
 # - PHP main version
 # -
+# - only needed, if PHP_ENGINE ist set to 'FPM'
+# -
+# - The script tries to  determin the PHP version (in case of PHP_ENGINE=FPM)
+# -
 # - Examples:
 # -    PHP_VERSION=5.6
 # -    PHP_VERSION=7.1
 # -
-# - only needed, if PHP_ENGINE ist set to 'FPM'
-# -
-PHP_VERSION=
+#PHP_VERSION=
 
 # - Database type
 # -