Add csit case for PNF Descriptors

Issue-ID: INT-1015
Signed-off-by: Olivia.Zhan <zhan.jie1@zte.com.cn>
Change-Id: I3abe3fcb8094001a1de1f37c92cfcf8f403b2f95
diff --git a/plans/vfc-nfvo-catalog/sanity-check/testplan.txt b/plans/vfc-nfvo-catalog/sanity-check/testplan.txt
index ad6cad5..ba5d4fc 100644
--- a/plans/vfc-nfvo-catalog/sanity-check/testplan.txt
+++ b/plans/vfc-nfvo-catalog/sanity-check/testplan.txt
@@ -6,3 +6,4 @@
 vfc/nfvo-catalog/VNFPackages.robot
 vfc/nfvo-catalog/IndividualVNFPackage.robot
 vfc/nfvo-catalog/VNFPackageContent.robot
+vfc/nfvo-catalog/PNFDescriptors.robot