Add python library pamela as a dependency of phosphor-rest-server

Pamela is a python wrapper for PAM. Compared to python-pam it has wrapper for
account management in addition to authentication.

(From meta-phosphor rev: 65c5362ac32389167766f51de4cd3f645fae0123)

Change-Id: I5fee48e75d1b68b998fdb2971aad3802191ee1d5
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-phosphor/interfaces/phosphor-rest.bb b/meta-phosphor/recipes-phosphor/interfaces/phosphor-rest.bb
index f18e55c..e1ae65a 100644
--- a/meta-phosphor/recipes-phosphor/interfaces/phosphor-rest.bb
+++ b/meta-phosphor/recipes-phosphor/interfaces/phosphor-rest.bb
@@ -23,6 +23,7 @@
         pyphosphor-utils \
         pyphosphor-dbus \
         pyphosphor-wsgi-apps-ns \
+        pamela \
         "
 SRC_URI += "file://url_config.json \
            "