Merge branch stable-2.10

* stable-2.10:
  Update JGit to latest 4.5.x release
  Resource exhausted because of unclosed LDAP connection

Change-Id: I1e07c7f8e2e4d08e0a06a5bb5dab6873408050c3
Signed-off-by: Edwin Kempin <ekempin@google.com>