Update source image to 1.10.5

[jdeathe]

Update source image to the 1.10.5 release.

Ref: jdeathe/centos-ssh-apache-php#551

Release changes

• Updates source image to 1.8.4 tag.
• Adds feature to set APACHE_SSL_CERTIFICATE via a file path. e.g. Docker Swarm secrets.
• Updates php-hello-world to 0.8.0.
• Adds feature to allow PHP_OPTIONS_SESSION_SAVE_PATH to be set relative to APACHE_CONTENT_ROOT for the files handler.
• Adds method of setting additional modules with APACHE_LOAD_MODULES.