flexnet: increase debug level

To debug TFC-102

Change-Id: Ib8addbd8d1467f349f6591645b805c5d6af23956
diff --git a/centos8-amd64-flexnet/entrypoint.sh b/centos8-amd64-flexnet/entrypoint.sh
index e6fc588..b0f20b1 100755
--- a/centos8-amd64-flexnet/entrypoint.sh
+++ b/centos8-amd64-flexnet/entrypoint.sh
@@ -1,6 +1,8 @@
 #!/bin/sh -e
 
 export PATH=$PATH:/opt/flexnetserver/
+export FLEXLM_DIAGNOSTICS=3
+
 cd /opt/flexnetserver/ && tar zxvf /var/flexnet/*.tgz
 
 lmutil lmhostid