Include ipmi_pass to the image through pam-ipmi

Update pam-ipmi recipe to add ipmi_pass file to the image

Unit test:
Verified by making sure files is copied to the update bmc image.

Change-Id: Ie389a1ef0071499e9c61ba84c4186f6e5f47dece
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>
diff --git a/recipes-core/pam/pam-ipmi_git.bb b/recipes-core/pam/pam-ipmi_git.bb
index 1e7e376..4e74a94 100644
--- a/recipes-core/pam/pam-ipmi_git.bb
+++ b/recipes-core/pam/pam-ipmi_git.bb
@@ -19,4 +19,5 @@
 FILES_${PN} += " \
                ${base_libdir}/security/ \
                ${sysconfdir}/key_file \
+               ${sysconfdir}/ipmi_pass \
                "