Leverage Map Ref in PCE PostAlgoPathValidator

Leverage Map Ref in PCE PostAlgoPathValidator

CatalogUtils compute many signal parameters stored with double values.
They are passed to many methods arguments and modified in many places
in PCE PostAlgoPathValidator.
Leveraging Map references to group these double values would help to
simplify the code by avoiding long list of such parameters
and allowing their values to be modified directly inside intermediate
functions.

TODO:
Ideally, this work should be generalized to the whole CatalogUtils
class. Also as Double is immutable, it prevents from updating directly
Map values here. Apache proposes a MutableDouble alternative.
Of course, there is still the possibility to use double[] arrays.
But w/o key names to describe, the code reading will be harder.

JIRA: TRNSPRTPCE-725
Change-Id: Iff3cf98d82cb53dc3cc89714b92a2e3bf77157fb
Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>