Pass through TEST_PREMATURE_EXIT_FILE to simulators (#2688)

Also pass through `TEST_UNDECLARED_OUTPUTS_DIR` in
`ios_test_runner.template.sh`.

Signed-off-by: Brentley Jones <[email protected]>

Author: brentleyjones

apple/testing/default_runner/ios_test_runner.template.sh

@@ -99,7 +99,7 @@ if [[ -n "${TEST_TYPE}" ]]; then
   runner_flags+=("--test_type=${TEST_TYPE}")
 fi
 
-DEFAULT_ENV="TEST_SRCDIR=$TEST_SRCDIR,XML_OUTPUT_FILE=$XML_OUTPUT_FILE"
+DEFAULT_ENV="TEST_PREMATURE_EXIT_FILE=$TEST_PREMATURE_EXIT_FILE,TEST_SRCDIR=$TEST_SRCDIR,TEST_UNDECLARED_OUTPUTS_DIR=$TEST_UNDECLARED_OUTPUTS_DIR,XML_OUTPUT_FILE=$XML_OUTPUT_FILE"
 TEST_ENV="%(test_env)s"
 ENV_INHERIT=%(test_env_inherit)s
 for env_var in "${ENV_INHERIT[@]:-}"; do

apple/testing/default_runner/ios_xctestrun_runner.template.sh

@@ -134,7 +134,7 @@ fi
 
 # Add the test environment variables into the xctestrun file to propagate them
 # to the test runner
-default_test_env="TEST_SRCDIR=$TEST_SRCDIR,TEST_UNDECLARED_OUTPUTS_DIR=$TEST_UNDECLARED_OUTPUTS_DIR,XML_OUTPUT_FILE=$XML_OUTPUT_FILE"
+default_test_env="TEST_PREMATURE_EXIT_FILE=$TEST_PREMATURE_EXIT_FILE,TEST_SRCDIR=$TEST_SRCDIR,TEST_UNDECLARED_OUTPUTS_DIR=$TEST_UNDECLARED_OUTPUTS_DIR,XML_OUTPUT_FILE=$XML_OUTPUT_FILE"
 test_env="%(test_env)s"
 env_inherit=%(test_env_inherit)s
 for env_var in "${env_inherit[@]:-}"; do