terratest_log_parser does not retain a lot of useful test and failure information

[dkirrane]

Describe the bug
I would expect the report.xml generated by terratest_log_parser to contain the reason for the test failure.
However, terratest_log_parser loses the assertion results

To Reproduce

1. go test -count=1 -v | tee test_output.log

The above command created the following lines in the test_output.log:

--- FAIL: TestHelloWorldTerraform (0.74s)
    terraform_hello_world_test.go:193: 
        	Error Trace:	/mnt/c/terratest/terraform_hello_world_test.go:193
        	Error:      	Not equal: 
        	            	expected: "Hello foo eRcjAe"
        	            	actual  : "Hello eRcjAe"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1 +1 @@
        	            	-Hello foo eRcjAe
        	            	+Hello eRcjAe
        	Test:       	TestHelloWorldTerraform
FAIL
exit status 1

2. terratest_log_parser -testlog test_output.log -outputdir test_output --log-level info

The above command created the following report.xml:

<?xml version="1.0" encoding="UTF-8"?>
<testsuites>
	<testsuite tests="1" failures="1" time="0.804" name="github.com/company/terratest">
		<properties>
			<property name="go.version" value="go1.11"></property>
		</properties>
		<testcase classname="terratest" name="Failure" time="0.000">
			<failure message="Failed" type="">    terraform_hello_world_test.go:193: </failure>
		</testcase>
	</testsuite>
</testsuites>

Expected behavior
I would expect the report.xml to include

• the testcase name == test i.e. the go test function name TestHelloWorldTerraform
• the failure body == assertion error

Versions

• Terratest version: 1.7.5
• Environment details (Ubuntu 20.04, Windows 10, etc.): WSL2