Merge branch 'update-appmonitor-client' into 'master'

public_html/appmonitor/classes/appmonitor-checks.class.php

public_html/appmonitor/classes/appmonitor-client.class.php

public_html/appmonitor/example.json

public_html/appmonitor/general_include.sample.php

public_html/appmonitor/index.php

public_html/appmonitor/index.sample.php

...ic_html/appmonitor/plugins/apps/iml-appmonitor-server.php

public_html/appmonitor/plugins/apps/shared_check_ssl.php