Add slides, video and transcript to Gerrit CI talk

Change-Id: Iaf9f22b83c952e4e2f5d96ce133f9be07dc77ec6

sessions/gerrit-ci-forever.md

diff --git a/sessions/gerrit-ci-forever.md b/sessions/gerrit-ci-forever.md
index 7f5bf45..b7341c6 100644
--- a/sessions/gerrit-ci-forever.md
+++ b/sessions/gerrit-ci-forever.md
@@ -12,3 +12,7 @@
 the logs with the same URL referenced in the Gerrit changes.
 
 *[Luca Milanesio / Gerrit CI Build Engineer / GerritForge](../speakers.md#lmilanesio)*
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+Slides are available on [SlideShare](https://www.slideshare.net/lucamilanesio/how-to-keep-jenkins-logs-forever-without-performance-issues)
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+YouTube and transcript are available on [GitEnterprise.me](https://gitenterprise.me/2017/10/24/gerrit-user-summit-jenkins-forever/)