Limit maximum number of concurrent keystore operations.
am: ddab0bb513

* commit 'ddab0bb51320af9f277d98a4e36e77ea527503e5':
  Limit maximum number of concurrent keystore operations.
tree: 40fa57edfeb0e6e5b0496b9b48ca61dc4aa270fb
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/