Use JRE in buildpack, bump dea_next

$ git shortlog e7db702..c4cb333
Dmitriy Kalinin and Max Brunsfeld (1):
      Fix indentation in staging spec

Iwasaki Yudai (2):
      Add a test to ensure only two CPU stat samples are kept
      Expose cpu_samples

Jake Farrell (1):
      Hidden files at top level dir missed

Kowshik Prakasam and Maria Shaldibina (1):
      Bump java buildpack

Maria Shaldibina and Max Brunsfeld (1):
      Limit memory for staging tasks

Stefan Schneider (1):
      Small fix for CPU stats collection.

pivotal-vmware (2):
      Merge pull request #9 from yudai/request_fix_cpu_samples_memory_leak
      Merge pull request #8 from jfarrell/hidden-files