Allow for optional selection of SSH identity when connecting

[csc-gip]

We store an identifier for ssh identities, so we should be able to use them when creating a connection instead of just trying all identities. There are usually limits for the number of tries.

xyna-factory/modules/xact/connection/ssh/sharedlib/SSHJUtils/src/xact/ssh/IdentityStorableRepository.java

Lines 362 to 368 in 971b722

	private static String generateName(byte[] publicKey) {
	try {
	MessageDigest digest = MessageDigest.getInstance("SHA-256");
	byte[] hash = digest.digest(publicKey);
	String sha256hex = new String(Hex.encode(hash));
	return "Identity@" + sha256hex;
	} catch (Exception e) {

We also should order keys by an optional priority to be able to filter them so we can make a key-rollover easier.

[csc-gip]

c.f. DHICB-15654