Revert "DS-1490: removed use of sli nexus for distro mgmt."

This reverts commit f88856a44c64d86f1efb66fe6ea641210fe5b10c.
Revert "DS-1490:  Fixed maven POM which was not building manifests for WARs, even through code existed to do so in the POMs..."

This reverts commit f069eed910043b49a9238f27aee594dc608212bf.