Merge 'integration' into 'topics/corstone1000'

Refresh the topic branch from integration. Refactor se-proxy
deployment to align with deployment structure changes:
  - introduce a CS1K specific infrastructure to se-proxy
    deployment
  - restore HW independence of "stub" infra of se-proxy
  - clean up components added from se-proxy.cmake and
    se_proxy_sp.cmake (remove duplicates and add what's missing)

Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
Change-Id: Ib7f2c25c5057e95771cc16c3774759933e3f2c9c