Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

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diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/krb5/doc/plugindev/internal.rst b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/krb5/doc/plugindev/internal.rst
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+Internal pluggable interfaces
+=============================
+
+Following are brief discussions of pluggable interfaces which have not
+yet been made public.  These interfaces are functional, but the
+interfaces are likely to change in incompatible ways from release to
+release.  In some cases, it may be necessary to copy header files from
+the krb5 source tree to use an internal interface.  Use these with
+care, and expect to need to update your modules for each new release
+of MIT krb5.
+
+
+Kerberos database interface (KDB)
+---------------------------------
+
+A KDB module implements a database back end for KDC principal and
+policy information, and can also control many aspects of KDC behavior.
+For a full description of the interface, see the header file
+``<kdb.h>``.
+
+The KDB pluggable interface is often referred to as the DAL (Database
+Access Layer).
+
+
+Authorization data interface (authdata)
+---------------------------------------
+
+The authdata interface allows a module to provide (from the KDC) or
+consume (in application servers) authorization data of types beyond
+those handled by the core MIT krb5 code base.  The interface is
+defined in the header file ``<krb5/authdata_plugin.h>``, which is not
+installed by the build.