Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  RestForwarder: Replace lambda with method reference
  Always use the stored timestamp when checking for updates
  Use always the last TS of the reindex across runs
  GroupReindexRunnable: Replace lambdas with method reference
  Support n nodes when using static strategy

Change-Id: Ia17b19a6fb881eb0fc863e0d77b3c4521a4fdea7