Rework more commons-lang usages (#10314)

* Reworks many commons-lang usages to use standard Java
* Updates all remaining commons.lang imports to commons.lang3

Related to openhab/openhab-addons#7722

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

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

@@ -20,7 +20,6 @@ Fragment-Host: org.openhab.binding.ntp
 	ch.qos.logback.core;version='[1.2.3,1.2.4)',\
 	com.google.gson;version='[2.8.2,2.8.3)',\
 	javax.measure.unit-api;version='[1.0.0,1.0.1)',\
-	org.apache.commons.lang;version='[2.6.0,2.6.1)',\
 	org.apache.commons.commons-net;version='[3.7.2,3.7.3)',\
 	org.apache.felix.configadmin;version='[1.9.8,1.9.9)',\
 	org.apache.felix.http.servlet-api;version='[1.1.2,1.1.3)',\