roles/php-fpm: Update php7.0-php.ini template

Sync with latest packaged version from Debian 9. Effectively this
only updates comments and disabled options, but having less changes
to look at during an apt upgrade is nice and reduces the chance of
adding errors.

roles/php-fpm/templates/php7.0-php.ini.j2

@@ -1186,6 +1186,19 @@ mysqlnd.collect_statistics = On
 ; http://php.net/mysqlnd.collect_memory_statistics
 mysqlnd.collect_memory_statistics = Off
 
+; Records communication from all extensions using mysqlnd to the specified log
+; file.
+; http://php.net/mysqlnd.debug
+;mysqlnd.debug =
+
+; Defines which queries will be logged.
+; http://php.net/mysqlnd.log_mask
+;mysqlnd.log_mask = 0
+
+; Default size of the mysqlnd memory pool, which is used by result sets.
+; http://php.net/mysqlnd.mempool_default_size
+;mysqlnd.mempool_default_size = 16000
+
 ; Size of a pre-allocated buffer used when sending commands to MySQL in bytes.
 ; http://php.net/mysqlnd.net_cmd_buffer_size
 ;mysqlnd.net_cmd_buffer_size = 2048
@@ -1195,6 +1208,15 @@ mysqlnd.collect_memory_statistics = Off
 ; http://php.net/mysqlnd.net_read_buffer_size
 ;mysqlnd.net_read_buffer_size = 32768
 
+; Timeout for network requests in seconds.
+; http://php.net/mysqlnd.net_read_timeout
+;mysqlnd.net_read_timeout = 31536000
+
+; SHA-256 Authentication Plugin related. File with the MySQL server public RSA
+; key.
+; http://php.net/mysqlnd.sha256_server_public_key
+;mysqlnd.sha256_server_public_key =
+
 [OCI8]
 
 ; Connection: Enables privileged connections using external
@@ -1785,6 +1807,7 @@ opcache.revalidate_freq={{ opcache_revalidate_freq }}
 opcache.save_comments={{ opcache_save_comments }}
 
 ; If enabled, a fast shutdown sequence is used for the accelerated code
+; Depending on the used Memory Manager this may cause some incompatibilities.
 opcache.fast_shutdown={{ opcache_fast_shutdown }}
 
 ; Allow file existence override (file_exists, etc.) performance feature.
@@ -1863,6 +1886,12 @@ opcache.fast_shutdown={{ opcache_fast_shutdown }}
 ; This should improve performance, but requires appropriate OS configuration.
 ;opcache.huge_code_pages=1
 
+; Validate cached file permissions.
+; opcache.validate_permission=0
+
+; Prevent name collisions in chroot'ed environment.
+; opcache.validate_root=0
+
 [curl]
 ; A default value for the CURLOPT_CAINFO option. This is required to be an
 ; absolute path.