With the help of a useful fellow over at the hipchat nexus community, I got this problem solved. I THINK what the problem was is that the spring repos weren't in my public repo group config. They looked like they were there, but it's possible I never hit save after moving them in there. What led me to discover this was by loading this url in my browser: http://yourdomain.com:8081/nexus/content/groups/public/org/cloudfoundry/cloudfoundry-runtime/0.8.2/cloudfoundry-runtime-0.8.2.pom?describe
That will spit out a bunch of json and it listed the repos that were searched. In there is was obvious the spring repos weren't being searched, so I went back to the config, added them, and hit SAVE this time for sure and then I could resolve the dependency!