include karaf client script in assembly
fix writing to actually only happen during flush
fix excludes so "client" is properly included in the karaf tarball
Merge remote-tracking branch 'origin/1.12'

Conflicts:
	container/karaf/src/assembly/karaf.xml
	opennms-webapp/src/main/java/org/opennms/web/rest/SnmpConfigAccessService.java