expect-lava: Propagate failure clauses to all TFTF test snippets

There're cases (e.g.
https://storage.tuxsuite.com/public/tfc/ci/tests/2c3GU03Ot5twIUL0mAhAKOJaZ3C/lava-logs.html)
where a test hangs until timeout instead of catching panic fast.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I1a19e7e21d7db3527d24624a16d6ed442ec2fd5a
diff --git a/expect-lava/disable_dyn_auth_tftf.exp b/expect-lava/disable_dyn_auth_tftf.exp
index f13c6cb..e18a4ff 100644
--- a/expect-lava/disable_dyn_auth_tftf.exp
+++ b/expect-lava/disable_dyn_auth_tftf.exp
@@ -9,7 +9,8 @@
 source $ci_root/expect-lava/disable_dyn_auth.inc
 
 prompt='Booting trusted firmware test framework'
-expect_string+=("i;${prompt}")
+failures='Panic:'
+expect_string+=("i;${prompt};;${failures}")
 
 prompt='Running at NS-EL(1|2)'
 expect_string+=("i;${prompt}")
diff --git a/expect-lava/tftf-non-primary.exp b/expect-lava/tftf-non-primary.exp
index f1cd67c..040e9ca 100644
--- a/expect-lava/tftf-non-primary.exp
+++ b/expect-lava/tftf-non-primary.exp
@@ -7,7 +7,8 @@
 #
 
 prompt='Booting trusted firmware test framework'
-expect_string+=("i;${prompt}")
+failures='Panic:'
+expect_string+=("i;${prompt};;${failures}")
 
 prompt='Running at NS-EL(1|2)'
 expect_string+=("i;${prompt}")