* stable-3.1: Update git submodules Update git submodules Update git submodules Update git submodules Elasticsearch: Remove support for EOL 6.6 version ElasticContainer: Upgrade V7_8 to elasticsearch 7.8.1 ElasticContainer: Upgrade V6_8 to elasticsearch 6.8.11 Fix gr-hovercard-behavior under Firefox Add entries to .gitignore of stable-3.0 that exist on master Change-Id: I4c28a0671f3927b99f01639e80fc7bfbd3059213