Restore some meetpad settings we had previously set

This starts conferences with participant video muted and it disabled p2p
connections for calls between two participants. We had these settings
before but the recent container image update undid them.

Change-Id: I4152ace083f79116758020fbbcbbb96e39eef9ed

playbooks/roles/jitsi-meet/files/jitsi-meet-docker/meet-docker-compose.yaml

@@ -19,6 +19,7 @@ services:
             - ENABLE_LETSENCRYPT
             - ENABLE_HTTP_REDIRECT
             - ENABLE_TRANSCRIPTIONS
+            - ENABLE_P2P
             - DISABLE_HTTPS
             - JICOFO_AUTH_USER
             - LETSENCRYPT_DOMAIN
@@ -40,6 +41,7 @@ services:
             - JIBRI_RECORDER_USER
             - JIBRI_RECORDER_PASSWORD
             - ENABLE_RECORDING
+            - START_VIDEO_MUTED
 
     # XMPP server
     prosody:

playbooks/roles/jitsi-meet/templates/jvb-env.j2

@@ -196,3 +196,10 @@ JVB_TCP_PORT=4443
 
 # Redirects HTTP traffic to HTTPS. Only works with the standard HTTPS port (443).
 #ENABLE_HTTP_REDIRECT=1
+
+# Participants after the Nth (value below) joining will have their video muted.
+# This should mute video for all participants who join.
+START_VIDEO_MUTED=0
+
+# Disable P2P connections for meetings between two participants.
+ENABLE_P2P=false

playbooks/roles/jitsi-meet/templates/meet-env.j2

@@ -299,3 +299,10 @@ JIBRI_LOGS_DIR=/config/logs
 
 # Redirects HTTP traffic to HTTPS. Only works with the standard HTTPS port (443).
 #ENABLE_HTTP_REDIRECT=1
+
+# Participants after the Nth (value below) joining will have their video muted.
+# This should mute video for all participants who join.
+START_VIDEO_MUTED=0
+
+# Disable P2P connections for meetings between two participants.
+ENABLE_P2P=false