[llvm][lit] Make Xunit time test regex less strict

I got a report that downstream this test failed and the cause was
that it took longer than the 1 second we expected to run one of the
test cases.

There's no reason for this test to be that specific, so I've changed
all the [0-1] to [0-9]+. This test does not care whether the times make
any sense, only that they exist.

A couple exisitng regex here make the decimal point optional, and on my
machine I always seem to get `.00`. So I think they are always finding
a decimal point anyway.

I've left them just on the slim chance that some platform happens
to print that time as a single number if it's a whole number of seconds.

Author: DavidSpickett

llvm/utils/lit/tests/xunit-output.py

@@ -10,17 +10,17 @@
 # CHECK:      <?xml version="1.0" encoding="UTF-8"?>
 # CHECK-NEXT: <testsuites time="{{[0-9.]+}}">
 # CHECK-NEXT: <testsuite name="test-data" tests="5" failures="1" skipped="3" time="{{[0-9.]+}}">
-# CHECK-NEXT: <testcase classname="test-data.test-data" name="bad&amp;name.ini" time="{{[0-1]\.[0-9]+}}">
+# CHECK-NEXT: <testcase classname="test-data.test-data" name="bad&amp;name.ini" time="{{[0-9]+\.[0-9]+}}">
 # CHECK-NEXT:   <failure><![CDATA[& < > ]]]]><![CDATA[> &"]]></failure>
 # CHECK-NEXT: </testcase>
-# CHECK-NEXT: <testcase classname="test-data.test-data" name="excluded.ini" time="{{[0-1]\.[0-9]+}}">
+# CHECK-NEXT: <testcase classname="test-data.test-data" name="excluded.ini" time="{{[0-9]+\.[0-9]+}}">
 # CHECK-NEXT:   <skipped message="Test not selected (--filter, --max-tests)"/>
 # CHECK-NEXT: </testcase>
-# CHECK-NEXT: <testcase classname="test-data.test-data" name="missing_feature.ini" time="{{[0-1]\.[0-9]+}}">
+# CHECK-NEXT: <testcase classname="test-data.test-data" name="missing_feature.ini" time="{{[0-9]+\.[0-9]+}}">
 # CHECK-NEXT:   <skipped message="Missing required feature(s): dummy_feature"/>
 # CHECK-NEXT: </testcase>
-# CHECK-NEXT: <testcase classname="test-data.test-data" name="pass.ini" time="{{[0-1]\.[0-9]+}}"/>
-# CHECK-NEXT: <testcase classname="test-data.test-data" name="unsupported.ini" time="{{[0-1]\.[0-9]+}}">
+# CHECK-NEXT: <testcase classname="test-data.test-data" name="pass.ini" time="{{[0-9]+\.[0-9]+}}"/>
+# CHECK-NEXT: <testcase classname="test-data.test-data" name="unsupported.ini" time="{{[0-9]+\.[0-9]+}}">
 # CHECK-NEXT:   <skipped message="Unsupported configuration"/>
 # CHECK-NEXT: </testcase>
 # CHECK-NEXT: </testsuite>