Resolve itest runbundles for Gson and Commons Lang upgrades and fix JsonParser deprecations (#10345)

* Resolve itest runbundles for Gson and Commons Lang upgrades
* Fix JsonParser deprecations too
* Fix feature verification

Signed-off-by: Wouter Born <github@maindrain.net>

itests/org.openhab.binding.systeminfo.tests/itest.bndrun

@@ -18,7 +18,6 @@ Fragment-Host: org.openhab.binding.systeminfo
 # done
 #
 -runbundles: \
-	com.google.gson;version='[2.8.2,2.8.3)',\
 	javax.measure.unit-api;version='[1.0.0,1.0.1)',\
 	org.apache.felix.configadmin;version='[1.9.8,1.9.9)',\
 	org.apache.felix.http.servlet-api;version='[1.1.2,1.1.3)',\
@@ -66,4 +65,5 @@ Fragment-Host: org.openhab.binding.systeminfo
 	org.objenesis;version='[3.1.0,3.1.1)',\
 	org.glassfish.hk2.osgi-resource-locator;version='[1.0.3,1.0.4)',\
 	biz.aQute.tester.junit-platform;version='[5.3.0,5.3.1)',\
-	org.apache.commons.lang3;version='[3.9.0,3.9.1)'
+	com.google.gson;version='[2.8.6,2.8.7)',\
+	org.apache.commons.lang3;version='[3.12.0,3.12.1)'