[Development][Update] Updated documentation for v0.7.0 (#129)

CHANGELOG.md

SECURITY.md

docs/src/guide/changelog.md

docs/src/guide/grafana.md

docs/src/guide/images/grafana1.png

docs/src/guide/images/grafana2.png

docs/src/guide/installation.md

docs/src/guide/monitoring.md

docs/src/guide/redis-cluster-config.md

docs/src/guide/redis-config.md

docs/src/guide/setup.md