Added switch TLS keys

 - this allows to finish exemplary TLS configuration
 - selfSignedSwitch and selfSignedController keystores were moved to src/test/resources
 	as they are used only in test
 - other keystores located in src/main/resources were updated with "exemplary-" prefixes
	to clearly mark them for exemplary usage

Change-Id: I821f79e1af8b50fc59e3e5067841a017ec9c1282
Signed-off-by: Michal Polkorab <michal.polkorab@pantheon.sk>