removed dns key

env

@@ -1,6 +1,6 @@
 DHCP_TSIG_KEY_NAME=dhcpupdate
 DHCP_TSIG_KEY_ALGO=hmac-md5
-DHCP_TSIG_KEY_SECRET=Y2hhbmdlX2l0
+DHCP_TSIG_KEY_SECRET=change_it
 
 DHCP_DNS_MASTER=10.15.100.1
 DHCP_DNS_SERVER=10.15.100.1