Revert "fix(tidb): PD roleProbe peer fallback + remove externalManaged" (#2958)

Author: cjc7373

addons/tidb/scripts-ut-spec/pd_role_probe_spec.sh

@@ -80,6 +80,7 @@ spec:
       template: {{ include "tidb.pd.configTplName" . }}
       namespace: {{ .Release.Namespace }}
       volumeName: config
+      externalManaged: true
       reconfigure:
         exec:
           container: pd
@@ -103,13 +104,17 @@ spec:
       participatesInQuorum: true
   lifecycleActions:
     roleProbe:
-      timeoutSeconds: 5
       exec:
         command:
           - bash
           - -c
           - |
-            {{- .Files.Get "scripts/pd_role_probe.sh" | nindent 12 }}
+            LEADER_NAME=$(/pd-ctl member | jq -r '.leader.name')
+            if [ "$LEADER_NAME" == "$HOSTNAME" ]; then
+                echo -n "leader"
+            else
+                echo -n "follower"
+            fi
     memberLeave:
       exec:
         command:

addons/tidb/scripts/pd_role_probe.sh

@@ -90,6 +90,7 @@ spec:
       template: {{ include "tidb.tidb.configTplName" . }}
       namespace: {{ .Release.Namespace }}
       volumeName: config
+      externalManaged: true
   systemAccounts:
     - name: root
       initAccount: true

addons/tidb/templates/cmpd-pd.yaml

@@ -78,6 +78,7 @@ spec:
       template: {{ include "tidb.tikv.configTplName" . }}
       namespace: {{ .Release.Namespace }}
       volumeName: config
+      externalManaged: true
   lifecycleActions:
     memberLeave:
       exec: