MySql: Fix tls auth settings in config page (#20501)

public/app/features/datasources/partials/tls_auth_settings.html

+<div class="gf-form-group">
+  <div class="gf-form">
+    <h6>TLS Auth Details</h6>
+    <info-popover mode="header">TLS Certs are encrypted and stored in the Grafana database.</info-popover>
+  </div>
+  <div ng-if="current.jsonData.tlsAuthWithCACert">
+    <div class="gf-form-inline">
+      <div class="gf-form gf-form--v-stretch"><label class="gf-form-label width-7">CA Cert</label></div>
+      <div class="gf-form gf-form--grow" ng-if="!current.secureJsonFields.tlsCACert">
+         <textarea
+           rows="7"
+           class="gf-form-input gf-form-textarea"
+           ng-model="current.secureJsonData.tlsCACert"
+           placeholder="Begins with -----BEGIN CERTIFICATE-----"
+         ></textarea>
+      </div>
+
+      <div class="gf-form" ng-if="current.secureJsonFields.tlsCACert">
+        <input type="text" class="gf-form-input max-width-12" disabled="disabled" value="configured" />
+        <a class="btn btn-secondary gf-form-btn" href="#" ng-click="current.secureJsonFields.tlsCACert = false">reset</a>
+      </div>
+    </div>
+  </div>
+
+  <div ng-if="current.jsonData.tlsAuth">
+    <div class="gf-form-inline">
+      <div class="gf-form gf-form--v-stretch"><label class="gf-form-label width-7">Client Cert</label></div>
+      <div class="gf-form gf-form--grow" ng-if="!current.secureJsonFields.tlsClientCert">
+         <textarea
+           rows="7"
+           class="gf-form-input gf-form-textarea"
+           ng-model="current.secureJsonData.tlsClientCert"
+           placeholder="Begins with -----BEGIN CERTIFICATE-----"
+           required
+         ></textarea>
+      </div>
+      <div class="gf-form" ng-if="current.secureJsonFields.tlsClientCert">
+        <input type="text" class="gf-form-input max-width-12" disabled="disabled" value="configured" />
+        <a class="btn btn-secondary gf-form-btn" href="#" ng-click="current.secureJsonFields.tlsClientCert = false"
+        >reset</a
+        >
+      </div>
+    </div>
+
+    <div class="gf-form-inline">
+      <div class="gf-form gf-form--v-stretch"><label class="gf-form-label width-7">Client Key</label></div>
+      <div class="gf-form gf-form--grow" ng-if="!current.secureJsonFields.tlsClientKey">
+         <textarea
+           rows="7"
+           class="gf-form-input gf-form-textarea"
+           ng-model="current.secureJsonData.tlsClientKey"
+           placeholder="Begins with -----BEGIN RSA PRIVATE KEY-----"
+           required
+         ></textarea>
+      </div>
+      <div class="gf-form" ng-if="current.secureJsonFields.tlsClientKey">
+        <input type="text" class="gf-form-input max-width-12" disabled="disabled" value="configured" />
+        <a class="btn btn-secondary gf-form-btn" href="#" ng-click="current.secureJsonFields.tlsClientKey = false">reset</a>
+      </div>
+    </div>
+  </div>
+</div>