Managers ID : Introduced variable to declare Managers ID in resource.robot and updated all the scripts in openbmc-test-automation

Changes:
    - Introduced ${MANAGER_ID} variable in resource.robot
    - Replaced all the Managers/bmc to Managers/${MANAGER_ID} across all the scripts
    - Also in data/variables.py updated chassis id for the few redfish uri.

Tested:
     - Ran All The Scripts Successfully

Change-Id: Iff3673aae27657e0799dec5cb94c1651a0cd5d18
Signed-off-by: ganesanb <ganesanb@ami.com>
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/openpower/mpipl/test_mpipl_basic.robot b/openpower/mpipl/test_mpipl_basic.robot
index 767b98d..cbe2754 100644
--- a/openpower/mpipl/test_mpipl_basic.robot
+++ b/openpower/mpipl/test_mpipl_basic.robot
@@ -114,17 +114,17 @@
     [Documentation]  Check for BMC and system dump.
 
     #   {
-    #       "@odata.id": "/redfish/v1/Managers/bmc/LogServices/Dump/Entries/4",
+    #       "@odata.id": "/redfish/v1/Managers/${MANAGER_ID}/LogServices/Dump/Entries/4",
     #       "@odata.type": "#LogEntry.v1_8_0.LogEntry",
     #       "AdditionalDataSizeBytes": 914254,
-    #       "AdditionalDataURI": "/redfish/v1/Managers/bmc/LogServices/Dump/Entries/4/attachment",
+    #       "AdditionalDataURI": "/redfish/v1/Managers/${MANAGER_ID}/LogServices/Dump/Entries/4/attachment",
     #       "Created": "2022-07-22T03:36:23+00:00",
     #       "DiagnosticDataType": "Manager",
     #       "EntryType": "Event",
     #       "Id": "4",
     #       "Name": "BMC Dump Entry"
     #   }
-    ${bmc_dump}=  Redfish.Get Properties  /redfish/v1/Managers/bmc/LogServices/Dump/Entries
+    ${bmc_dump}=  Redfish.Get Properties  /redfish/v1/Managers/${MANAGER_ID}/LogServices/Dump/Entries
     Log To Console  BMC dumps generated: ${bmc_dump['Members@odata.count']}
     Should Be True  ${bmc_dump['Members@odata.count']} >= 1  msg=No BMC dump generated.