Replace resource.txt with resource.robot

Change-Id: I4d2afd35645880e33a31644cd717bbeae55666f0
Signed-off-by: Sandhya Somashekar <sansomas@in.ibm.com>
diff --git a/snmp/test_bmc_snmp_config.robot b/snmp/test_bmc_snmp_config.robot
index 8d5ddd1..f70eddf 100644
--- a/snmp/test_bmc_snmp_config.robot
+++ b/snmp/test_bmc_snmp_config.robot
@@ -3,7 +3,7 @@
 ...            configured and installed. For download, installation and
 ...            configuration refer http://www.net-snmp.org/.
 
-Resource  ../lib/snmp/resource.txt
+Resource  ../lib/snmp/resource.robot
 Resource  ../lib/snmp/snmp_utils.robot
 Resource  ../lib/openbmc_ffdc.robot