Add support for 2048bit ssl certificate to HAproxy
Add support for 2048bit ssl certificate to HAproxy

In the current HAproxy configuration support only 1024bit ssl
certificate without warnings.
Modify the configuration to support 2048bit certificate.

Change-Id: I87dfd4c7ea56b5f432d324d02c63ee020a5f2a7f
Closes-bug: #1514904

huntxu/fuel-library,huntxu/fuel-library,huntxu/fuel-library,huntxu/fuel-library,stackforge/fuel-library,stackforge/fuel-library,stackforge/fuel-library,eayunstack/fuel-library,eayunstack/fuel-library,eayunstack/fuel-library,stackforge/fuel-library,huntxu/fuel-library,xarses/fuel-library,xarses/fuel-library,eayunstack/fuel-library,eayunstack/fuel-library,xarses/fuel-library,xarses/fuel-library