tests: Reduce the coverage requirement in `source/common` (#18591)
tests: Reduce the coverage requirement in `source/common` (#18591)

Reduce the coverage requirement slightly to avoid flakes.

Signed-off-by: cbfdd6c6853e3a4e9819090573d5699d6d40d0bf@microsoft.com

Signed-off-by: Sotiris Nanopoulos <e234d9d4f86c0507549f9bcb6000bd90d5896f93@microsoft.com>
lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy