Refactoring Resource Resolution Component

Refactoring Resource Resolution Component

Use Case:
----------
Input Value (IV): It can be API Input Value or API Default value

If a Resource is marked as Input
    -> pick IV

If a Resource is marked as other than Input
    -> pick IV
    -> if IV is not present then resolve it as per DataDictionary Definition

** Return Error if Resource is not resolved using assert : ResourceAssignmentUtils.assertTemplateKeyValueNotNull

Issue-ID: CCSDK-1746
Signed-off-by: Singal, Kapil (ks220y) <ks220y@att.com>
Change-Id: Ia3aaaa36d0e32b0b468f016d57ed5d2c4ddf6a32