More double slash URL fixes

Fix SNMP test case library module.
Fix TCs that reference NETWORK_MANAGER.
Fix TCs that reference BMC_LOGGING_ENTRY.

Change-Id: I17070540062461ef2106e8e2aa7f43f835bf7fdd
Signed-off-by: Steven Sombar <ssombar@us.ibm.com>
diff --git a/lib/snmp/snmp_utils.robot b/lib/snmp/snmp_utils.robot
index 792afa1..3ede66a 100644
--- a/lib/snmp/snmp_utils.robot
+++ b/lib/snmp/snmp_utils.robot
@@ -34,7 +34,7 @@
     ${data}=  Create Dictionary  data=@{snmp_parm_list}
 
     ${resp}=  OpenBMC Post Request
-    ...  ${SNMP_MANAGER_URI}/action/Client  data=${data}
+    ...  ${SNMP_MANAGER_URI}action/Client  data=${data}
 
     Run Keyword If  '${expected_result}' == 'error'
     ...      Should Be Equal As Strings