Rename Python scripts to use '_' and not '-'

You can't import a Python script whose name includes '-'.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

docs/architecture/testing/test-framework.md

@@ -22,7 +22,7 @@ Each test case has a description which succinctly describes for a human audience
 * Make the description descriptive. “foo: x=2, y=4” is more descriptive than “foo #2”. “foo: 0<x<y, both even” is even better if these inequalities and parities are why this particular test data was chosen.
 * Avoid changing the description of an existing test case without a good reason. This breaks the tracking of failures across CI runs, since this tracking is based on the descriptions.
 
-`tests/scripts/check-test-cases.py` enforces some rules and warns if some guidelines are violated.
+`tests/scripts/check_test_cases.py` enforces some rules and warns if some guidelines are violated.
 
 ## TLS tests
 
@@ -32,7 +32,7 @@ Each test case has a description which succinctly describes for a human audience
 
 Each test case in `ssl-opt.sh` has a description which succinctly describes for a human audience what the test does. The test description is the first parameter to `run_tests`.
 
-The same rules and guidelines apply as for [unit test descriptions](#unit-test-descriptions). In addition, the description must be written on the same line as `run_test`, in double quotes, for the sake of `check-test-cases.py`.
+The same rules and guidelines apply as for [unit test descriptions](#unit-test-descriptions). In addition, the description must be written on the same line as `run_test`, in double quotes, for the sake of `check_test_cases.py`.
 
 ## Running tests
 

tests/scripts/all.sh

@@ -680,7 +680,7 @@ component_check_doxy_blocks () {
 
 component_check_files () {
     msg "Check: file sanity checks (permissions, encodings)" # < 1s
-    record_status tests/scripts/check-files.py
+    record_status tests/scripts/check_files.py
 }
 
 component_check_changelog () {
@@ -707,7 +707,7 @@ component_check_test_cases () {
     else
         opt=''
     fi
-    record_status tests/scripts/check-test-cases.py $opt
+    record_status tests/scripts/check_test_cases.py $opt
     unset opt
 }