tools/ci.sh: Increase test timeout to 60s in coverage jobs.

The additional overhead of the settrace profiler means that the
`aes_stress.py` test was running too slowly on GitHub CI.  Double the
timeout to 60 seconds.

Signed-off-by: Jeff Epler <jepler@gmail.com>

Author: jepler

tests/run-tests.py

@@ -16,7 +16,7 @@
 import tempfile
 
 # Maximum time to run a PC-based test, in seconds.
-TEST_TIMEOUT = 30
+TEST_TIMEOUT = float(os.environ.get('MICROPY_TEST_TIMEOUT', 30))
 
 # See stackoverflow.com/questions/2632199: __file__ nor sys.argv[0]
 # are guaranteed to always work, this one should though.

tools/ci.sh

@@ -625,7 +625,7 @@ function ci_unix_coverage_build {
 }
 
 function ci_unix_coverage_run_tests {
-    ci_unix_run_tests_full_helper coverage
+    MICROPY_TEST_TIMEOUT=60 ci_unix_run_tests_full_helper coverage
 }
 
 function ci_unix_coverage_run_mpy_merge_tests {
@@ -745,7 +745,7 @@ function ci_unix_sanitize_undefined_build {
 }
 
 function ci_unix_sanitize_undefined_run_tests {
-    ci_unix_run_tests_full_helper coverage "${CI_UNIX_OPTS_SANITIZE_UNDEFINED[@]}"
+    MICROPY_TEST_TIMEOUT=60 ci_unix_run_tests_full_helper coverage "${CI_UNIX_OPTS_SANITIZE_UNDEFINED[@]}"
 }
 
 function ci_unix_sanitize_address_build {
@@ -756,7 +756,7 @@ function ci_unix_sanitize_address_build {
 }
 
 function ci_unix_sanitize_address_run_tests {
-    ci_unix_run_tests_full_helper coverage "${CI_UNIX_OPTS_SANITIZE_ADDRESS[@]}"
+    MICROPY_TEST_TIMEOUT=60 ci_unix_run_tests_full_helper coverage "${CI_UNIX_OPTS_SANITIZE_ADDRESS[@]}"
 }
 
 function ci_unix_macos_build {