Changes due to Eagle Uml2Yang tool updates to preserve UML literal names and to handle <ExtendedComposite>

[karthik-sethuraman]

• Changes due to Eagle Uml2Yang tool updates to preserve UML literal names -- the Eagle Uml2Yang tool was updated to preserve the literal names as defined in UML model. Since TAPI UML uses "ALL_CAPS" for enumeration literals, the resulting yang enums are now named in "ALL_CAPS"

• Changes due to Eagle Uml2Yang tool update to handle ExtendedComposite -- the previous versions of the Uml2Yang tool was treating ExtendedComposite same as StrictComposite by generating container/list statement. Now the tool generates "uses" statement for ExtendedComposite without the enclosing container/list statement.

[karthik-sethuraman]

@RodLU Yes it was a decision of the IISOMI. It was also noted in the IISOMI call that while yang models seldom use ALL_CAPS, it is not prohibited.