chore(openshift): use fabric8-client 5.4.1

pom.xml

@@ -67,7 +67,7 @@
   <org.apache.commons.validator.version>1.7</org.apache.commons.validator.version>
   <org.apache.commons.io.version>2.8.0</org.apache.commons.io.version>
   <org.apache.httpcomponents.version>4.5.13</org.apache.httpcomponents.version>
-  <io.fabric8.client.version>5.6.0</io.fabric8.client.version>
+  <io.fabric8.client.version>5.4.1</io.fabric8.client.version>
   <io.vertx.web.version>3.9.7</io.vertx.web.version>
   <org.slf4j.version>1.7.30</org.slf4j.version>
   <com.google.code.gson.version>2.8.6</com.google.code.gson.version>

src/test/java/io/cryostat/net/OpenShiftAuthManagerTest.java

@@ -59,6 +59,7 @@
 import com.google.gson.Gson;
 import io.fabric8.kubernetes.api.model.authorization.v1.SelfSubjectAccessReview;
 import io.fabric8.kubernetes.api.model.authorization.v1.SelfSubjectAccessReviewBuilder;
+import io.fabric8.kubernetes.client.Config;
 import io.fabric8.openshift.client.OpenShiftClient;
 import io.fabric8.openshift.client.server.mock.EnableOpenShiftMockClient;
 import io.fabric8.openshift.client.server.mock.OpenShiftMockServer;
@@ -68,6 +69,7 @@
 import org.hamcrest.MatcherAssert;
 import org.hamcrest.Matchers;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -96,6 +98,12 @@ class OpenShiftAuthManagerTest {
     TokenProvider tokenProvider;
     Gson gson = MainModule.provideGson(logger);
 
+    @BeforeAll
+    static void disableKubeConfig() {
+        // FIXME Disable reading ~/.kube/config. Remove once updated to 5.5.0 or newer.
+        System.setProperty(Config.KUBERNETES_AUTH_TRYKUBECONFIG_SYSTEM_PROPERTY, "false");
+    }
+
     @BeforeEach
     void setup() {
         client = Mockito.spy(client);