[VOL-3245] Consume port capability on port creation

This commit consists of the changes needed in the Core to build
a logical port without having to request port capability from
the adapters.

This commit requires changes in the OLT and ONU adapters to be
completed.  These are tracked under jira
https://jira.opencord.org/browse/VOL-3202. Until the adapters
changes are committed this commit will not pass jenkins.

Change-Id: I0cae167375b9a8c67a83202e25abcec6ae013a88
diff --git a/vendor/github.com/pkg/errors/.gitignore b/vendor/github.com/pkg/errors/.gitignore
new file mode 100644
index 0000000..daf913b
--- /dev/null
+++ b/vendor/github.com/pkg/errors/.gitignore
@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof