e2e: added test to verify read affinity functionality

e2e test case is added to test if read affinity is enabled by
verifying read_from_replica=localize option is passed

Signed-off-by: Praveen M <m.praveen@ibm.com>

charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml

@@ -87,8 +87,8 @@ spec:
 {{- if .Values.nodeplugin.profiling.enabled }}
             - "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
 {{- end }}
-            - "--enable-read-affinity={{ .Values.readAffinity.enabled }}"
-{{- if .Values.readAffinity.enabled }}
+            - "--enable-read-affinity={{ and .Values.readAffinity .Values.readAffinity.enabled }}"
+{{- if and .Values.readAffinity .Values.readAffinity.enabled }}
             - "--crush-location-labels={{ .Values.readAffinity.crushLocationLabels | join "," }}"
 {{- end }}
           env:

charts/ceph-csi-rbd/values.yaml

@@ -279,16 +279,16 @@ topology:
     - failure-domain/region
     - failure-domain/zone
 
-readAffinity:
-  # Enable read affinity for RBD volumes. Recommended to
-  # set to true if running kernel 5.8 or newer.
-  enabled: false
-  # Define which node labels to use as CRUSH location.
-  # This should correspond to the values set in the CRUSH map.
-  # NOTE: the value here serves as an example
-  crushLocationLabels:
-    - topology.kubernetes.io/region
-    - topology.kubernetes.io/zone
+# readAffinity:
+# Enable read affinity for RBD volumes. Recommended to
+# set to true if running kernel 5.8 or newer.
+# enabled: false
+# Define which node labels to use as CRUSH location.
+# This should correspond to the values set in the CRUSH map.
+# NOTE: the value here serves as an example
+# crushLocationLabels:
+#   - topology.kubernetes.io/region
+#   - topology.kubernetes.io/zone
 
 storageClass:
   # Specifies whether the storageclass should be created