feat: JDK client is now the default (#2235)

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

Diff for: .github/workflows/integration-tests.yml

@@ -12,7 +12,7 @@ on:
       http-client:
         type: string
         required: false
-        default: 'okhttp'
+        default: 'jdk'
       experimental:
         type: boolean
         required: false

Diff for: pom.xml

@@ -41,7 +41,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <sonar.organization>java-operator-sdk</sonar.organization>
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
-        <fabric8-httpclient-impl.name>okhttp</fabric8-httpclient-impl.name>
+        <fabric8-httpclient-impl.name>jdk</fabric8-httpclient-impl.name>
 
         <junit.version>5.10.1</junit.version>
         <fabric8-client.version>6.13.4</fabric8-client.version>