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/openpower/ras/test_host_ras.robot b/openpower/ras/test_host_ras.robot
index 1873329..085f980 100755
--- a/openpower/ras/test_host_ras.robot
+++ b/openpower/ras/test_host_ras.robot
@@ -348,7 +348,7 @@
     # signature_desc  Error log signature description.
     # log_prefix      Log path prefix.
 
-    ${resp}=  OpenBMC Get Request  ${BMC_LOGGING_ENTRY}/list
+    ${resp}=  OpenBMC Get Request  ${BMC_LOGGING_ENTRY}list
     Should Not Be Equal As Strings  ${resp.status_code}  ${HTTP_NOT_FOUND}
 
     Collect eSEL Log  ${log_prefix}