Add SRV6_PFPLM_PATH to .env file

Author: cscarpitta

nets/8r-1c-srv6-pm/.env

@@ -0,0 +1,5 @@
+export WORKSPACE=${HOME}/workspace
+export ROSE_SRV6_TUTORIAL=${WORKSPACE}/rose-srv6-tutorial
+
+# Configure SRV6_PFPML_PATH
+export SRV6_PFPML_PATH=/opt/srv6-pm-xdp-ebpf/srv6-pfplm