Minor fixes to help integration of CORD-912

Change-Id: I8dd69bf2eae091ca60bbbfbfebce465405662a58
diff --git a/pki/.gitignore b/pki/.gitignore
index e58b508..85fb566 100644
--- a/pki/.gitignore
+++ b/pki/.gitignore
@@ -1,4 +1,4 @@
 openssl.cfg
-intermediate_ca
+*_im_ca
 root_ca