chore(e2e): disable object truncation on test results

[tadayosi]

Relates to #2742

Release Note

NONE

[tadayosi]

Now it shows where the mismatch is:

=== RUN   TestMetrics/reconciliation_duration_metric
    operator_metrics_test.go:256: 
        Expected
            <string>: MetricFamily
        to match fields: {
        .Metric:
        	Expected
...
        	            Histogram: {
        	                SampleCount: 272,
...
        	to contain element matching
...
        	                "Histogram": <*gstruct.PointerMatcher | 0xc00061c140>{
        	                    Matcher: <*gstruct.FieldsMatcher | 0xc000add1d0>{
        	                        Fields: {
        	                            "SampleCount": <*gstruct.PointerMatcher | 0xc00061c120>{
        	                                Matcher: <*matchers.EqualMatcher | 0xc000c660a0>{Expected: <uint64>12},
        	                                failure: "Expected\n    <uint64>: 272\nto equal\n    <uint64>: 12",
        	                            },
        	                        },

What a difference! 😃
SampleCount: 272 != 12

[squakez]

Nice!