Set content-type when signaling deployment

In signal_deployments of
ParallelDeploymentsTest.test_deployments_metadata, set
the content-type to 'application/json'.

Change-Id: Id0ac6d76545bad1857aab2f85b65db2101df655e
Closes-Bug: #1656613
1 file changed
tree: 24078949cf3c75b978f7c6ca7a0f922331da2b3c
  1. common/
  2. functional/
  3. scenario/