ElasticContainer: Use 7.0.0-alpha2

Change-Id: Ied9d1de55fff994fe1ed0f4bc1a33e4b58dd4af8
1 file changed
tree: ecacad9d289daa29b7a6ab6d28acd64d9184ba16
  1. gerrit-acceptance-tests/
  2. gerrit-elasticsearch/
  3. gerrit-pgm/