UBUNTU: SAUCE: IMA: Change internal interfaces to use lsmblobs

UBUNTU: SAUCE: IMA: Change internal interfaces to use lsmblobs

The IMA interfaces ima_get_action() and ima_match_policy()
call LSM functions that use lsmblobs. Change the IMA functions
to pass the lsmblob to be compatible with the LSM functions.

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: John Johansen <john.johansen@canonical.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
cc: linux-integrity@vger.kernel.org
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Andrea Righi <andrea.righi@canonical.com>
[ saf: resolve conflicts ]
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>