Add issue numbers to TODO comments

In the python script I didn't use the word TODO because pylint doesn't
like that, but morally it's the same.

I removed the comment about "do we need a subset of compat.sh?" because
it turns out that `ssl-opt.sh` is already exercising all the key
exchanges:

    % sed -n 's/.*force_ciphersuite=TLS-\([^ ]*\)-WITH.*/\1/p' tests/ssl-opt.sh | sort -u
    DHE-PSK
    DHE-RSA
    ECDH-ECDSA
    ECDHE-ECDSA
    ECDHE-PSK
    ECDHE-RSA
    ECJPAKE
    PSK
    RSA
    RSA-PSK

(the only omission is ECDH-RSA which is not of interest here and does
not actually differ from ECDH-ECDSA). So, we don't need a subset of
compat.sh because we're already getting enough testing from ssl-opt.sh
(not to mention test_suite_ssl).

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/tests/scripts/analyze_outcomes.py b/tests/scripts/analyze_outcomes.py
index 482d64e..eeded5f 100755
--- a/tests/scripts/analyze_outcomes.py
+++ b/tests/scripts/analyze_outcomes.py
@@ -164,14 +164,14 @@
                 'ecdsa', # the software implementation that's excluded
                 # the following lines should not be needed,
                 # they will be removed by upcoming work
-                'psa_crypto_se_driver_hal',
-                'random',
-                'ecp',
-                'pk',
-                'x509parse',
-                'x509write',
-                'debug',
-                'ssl',
+                'psa_crypto_se_driver_hal', # #6856
+                'random', # #6856
+                'ecp', # #6856
+                'pk', # #6857
+                'x509parse', # #6858
+                'x509write', # #6858
+                'debug', # #6860
+                'ssl', # #6860
             ]}},
 }