[OPENJDK-2993] Fix jolokia test that used 'unzip'

We dropped unzip from the images as nothing else was using it. Rework
the jolokia test that used unzip to use jar instead.  Adjust the test
to not require s2i so it executes much faster and retitle it to be
clearer as to what it is testing.

Signed-off-by: Jonathan Dowland <jdowland@redhat.com>

modules/jolokia/8.2/tests/features/jolokia.feature

@@ -3,9 +3,9 @@
 # Tests for jboss/container/jolokia
 Feature: Openshift OpenJDK Jolokia tests
 
-  Scenario: Check Environment variable is correct
-    Given s2i build https://github.com/jboss-container-images/openjdk-test-applications from undertow-servlet
-    Then run sh -c 'unzip -q -p /usr/share/java/jolokia-jvm-agent/jolokia-jvm.jar META-INF/maven/org.jolokia/jolokia-jvm/pom.properties | grep -F ${JOLOKIA_VERSION}' in container and check its output for version=
+  Scenario: Ensure JOLOKIA_VERSION variable aligns with JAR
+    When container is started with command sh
+    Then run sh -c 'jar xf /usr/share/java/jolokia-jvm-agent/jolokia-jvm.jar META-INF/maven/org.jolokia/jolokia-jvm/pom.properties && grep ${JOLOKIA_VERSION} META-INF/maven/org.jolokia/jolokia-jvm/pom.properties' in container and check its output for version=
 
   Scenario: Check jolokia port is available
     Given s2i build https://github.com/jboss-container-images/openjdk-test-applications from undertow-servlet