SOL005: API versions endpoint included ad endpoint type + API version updated to 1.2.0 + PDF references updated

    SOL005_138/139: Updated type of notification attributes to "NotificationLink" rather than "Link" in "PkgmLinks" data type (VNF PM)

SOL005_137: Attribute "subscriptionId" has now cardinality of 1 (was 0..1) in "VnfPackageChangeNotification" data type (VNF PM)

SOL005_136: Attribute "subscriptionId" has now cardinality of 1 (was 0..1) in "VnfPackageOnboardingNotification" data type (VNF PM)

SOL005_131: Clarification is added about the response body in case of 200 OK to GET method on "Individual VNF package" (VNF PM)

SOL005_55/57/60/116/119/129/134: Added new query parameter "nextpage_opaque_marker" in NS LCM/NS FM/VNF PM interfaces

SOL005_8: Link and nextpage_opaque_marker added in NS mgmt and NS performarce mgmt GET requests + code formatting

Re committing VNFPM files.

(Patch 2 fixes errors in build scripts and openapis templates)

Change-Id: I60a1253130d9e84461819aa8f3f7509d41b22212
Signed-off-by: Michele Carignani <michele.carignani@etsi.org>