tests_gaudi: Update gaudi test documentation

This PR updates the gaudi test documentation by adding as part of the command
the namespace when looking for the pods and their logs in order to avoid
failures of not finding them.

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

Author: GabyCT

tests/gaudi/l2/README.md

@@ -9,12 +9,12 @@ $ oc apply -f https://raw.githubusercontent.com/intel/intel-technology-enabling-
 
 Verify Output:
 ```
-$ oc get pods
+$ oc get pods -n gaudi-validation
 NAME                         READY   STATUS      RESTARTS   AGE
 hl-smi-workload-2-f5qgs      0/1     Completed   0          27m
 ```
 ```
-$ oc logs hl-smi-workload-2-f5qgs
+$ oc logs hl-smi-workload-2-f5qgs -n gaudi-validation
 +-----------------------------------------------------------------------------+
 | HL-SMI Version:                                hl-1.17.1-fw-51.5.0          |
 | Driver Version:                                     1.17.1-78932ae          |
@@ -55,13 +55,13 @@ $ oc apply -f https://raw.githubusercontent.com/intel/intel-technology-enabling-
 
 Verify Output:
 ``` 
-$ oc get pods
+$ oc get pods -n gaudi-validation
 NAME                         READY   STATUS      RESTARTS   AGE
 hccl-demo-workload-1-build   0/1     Completed   0          23m
 hccl-demo-workload-wq8mx     0/1     Completed   0          10m
 ```
 ```
-$ oc logs hccl-demo-workload-wq8mx
+$ oc logs hccl-demo-workload-wq8mx -n gaudi-validation
 Affinity: Numa mapping directory: /tmp/affinity_topology_output
 Affinity: Script has not been executed before, going to execute...
 Affinity: Script has finished successfully
@@ -74,4 +74,4 @@ Welcome to HCCL demo
 [BENCHMARK]     NW Bandwidth   : 258.209121 GB/s
 [BENCHMARK]     Algo Bandwidth : 147.548069 GB/s
 ####################################################################################################
-```
+```