Define router model classes for Link Aggregation.
Update router model classes related to link aggregation.
Parser for link aggregation related configuration.

The parser does following things:
- looks for interfaces with aggregated-ether-options tag and creates AggregatedLogicalPorts representing them.
- looks for aggregated-ether-options and parses some of them in AggregatedOptions beans. (only minimum-links, link-speed and lacp active are parsed.)
- looks for interfaces with ieee-802.3ad tag and relates them with the aggregator mentioned above.
- populates the model with created classes.
Remove AggregatedLogicalPorts before parsing.

Avoiding AggregatedLogicalPorts duplication when GetConfigurationAction is called several times with the same model.
Test for link aggregation parser.
Merge branch 'feature/link-aggr-capab-junos-parser' into feature/link-aggr-capab
Fix template for VLANParserTest.
Getters implementation in LinkAggregationCapability.

They make use of LinkAggregationAPIAdapter to translate from model objects to defined API ones.
Merge pull request #890 from adrian-rosello/develop

Fix template for VLANParserTest.
Merge pull request #889 from isartcanyameres/feature/link-aggr-capab-junos-parser

Feature/link aggr capab junos parser
Merge pull request #891 from isartcanyameres/feature/link-aggr-capab-getters

Feature/link aggr capab getters
Merge branch 'develop' of git://github.com/dana-i2cat/opennaas into f2fdemo/L3VLAN
Fix test Junos configuration XML file.