Merge changes from topic 'km_tag_allow_on_body'

* changes:
  Add KM_TAG_ALLOW_WHILE_ON_BODY
  Add attestation support to keystore.
tree: fcf3d25ebd157f2c4b1ba6be2e81270a9a8a763f
  1. MODULE_LICENSE_APACHE2
  2. NOTICE
  3. keystore-engine/
  4. keystore/
  5. softkeymaster/