Add custom codec configurations for masked passwords

[guidograzioli]

Allow to configure password codec for masked password in JAAS property base files (artemis-users.properties) and broker.xml using a custom java class, by specifying the hash name and number of iterations (Default codec comes with hardcoded 'sha1' and 1024).

New parameters:

Variable	Description	Default
activemq_password_codec	Fully qualified class name and its parameters for the Decoder used to decode the masked password. Ignored if activemq_mask_password is false. Can be postfixed with parameters in the key=value;... format	org.apache.activemq.artemis.utils.DefaultSensitiveStringCodec
activemq_mask_password	Whether passwords in server configuration need to be masked.	True
activemq_additional_libs	List of jars to install in activemq classpath, read from playbook files lookup paths	[]
activemq_mask_password_hashname	Name of algorithm used for masking password, will be passed to custom codec	sha1
activemq_mask_password_iterations	Number of iterations for masking password, will be passed to custom codec	1024

Choices for activemq_mask_password_hashname are: [ 'sha1', 'sha224', 'sha256', 'sha384', 'sha512' ]

NOTE This feature won't work without providing a custom password codec class packaged in jar format. See Implementing Custom Codes. The custom codec class used in tests is here for reference.

NOTE The full feature can only work with activemq 2.29.0+ (AMQ Broker 7.11.1+) because of ARTEMIS-4273, apache/activemq-artemis#4469

For a complete usage example, check the molecule test

Fix: #77