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/all.sh b/tests/scripts/all.sh
index 2412c60..fa82733 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -2026,7 +2026,7 @@
         scripts/config.py unset MBEDTLS_ECDSA_C
     fi
     # Disable things that depend on it
-    # TODO: make these work
+    # TODO: make these work - #6862
     scripts/config.py unset MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
     scripts/config.py unset MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
 }
@@ -2074,8 +2074,7 @@
     msg "test: MBEDTLS_PSA_CRYPTO_CONFIG with accelerated ECDSA + USE_PSA"
     make test
 
-    # TODO: ssl-opt.sh (currently doesn't pass)
-    # TODO: is some subset of compat.sh needed?
+    # TODO: ssl-opt.sh (currently doesn't pass) - #6861
 }
 
 # Keep in sync with component_test_psa_crypto_config_accel_ecdsa_use_psa.
@@ -2094,7 +2093,7 @@
     msg "test: MBEDTLS_PSA_CRYPTO_CONFIG with accelerated ECDSA + USE_PSA"
     make test
 
-    # TODO: ssl-opt.sh (when the accel component is ready)
+    # TODO: ssl-opt.sh (when the accel component is ready) - #6861
 }
 
 component_test_psa_crypto_config_accel_ecdh () {