Add missing libmysqlclient-devel dependency for SUSE

Currently devstack unconditionally installs MySQL-python, so
we need to have its dependencies available. Since this is
transitional until the switch to PyMysql happened, lets just
add the dependency for now to have devstack working again.

Change-Id: I638b5999d35a06eee962679b1cd95950bbf2b1d7
diff --git a/files/rpms-suse/devlibs b/files/rpms-suse/devlibs
index 02c5398..bdb630a 100644
--- a/files/rpms-suse/devlibs
+++ b/files/rpms-suse/devlibs
@@ -3,5 +3,5 @@
 libxml2-devel  # lxml
 libxslt-devel  # lxml
 postgresql-devel  # psycopg2
+libmysqlclient-devel # MySQL-python
 python-devel  # pyOpenSSL
-libmysqld-devel  # MySQL-python
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