Genereate test plan document generation tool update:

- generate_test_document tool to get network directory support.

Resolves openbmc/openbmc-test-automation#1365

Change-Id: I0f3c93c75d3fbe955f64d3ec53d590066a824592
Signed-off-by: Sivas SRR <sivas.srr@in.ibm.com>
diff --git a/tools/generate_test_document b/tools/generate_test_document
index f7de80b..2ab09ed 100755
--- a/tools/generate_test_document
+++ b/tools/generate_test_document
@@ -59,6 +59,8 @@
   python -m robot.testdoc ras rasdirectoryTCdocs.html || ret_code=1
   python -m robot.testdoc secureboot securebootdirectoryTCdocs.html ||\
   ret_code=1
+  python -m robot.testdoc network networkdirectoryTCdocs.html ||\
+  ret_code=1
 
   return ${ret_code}
 }