test: some MATCHER_Ps now print nice stuff upon failure (#6524)
test: some MATCHER_Ps now print nice stuff upon failure (#6524)

ProtoEq previously just gave you "[a bunch of bytes in hex] is not equal to [other hex bytes]." I figured RepeatedProtoEq would also benefit. While I was in there, I also changed the existing HeaderMapEqualIgnoreOrder printing into the same nice format.

Risk Level: none
Testing: test only

Signed-off-by: Fred Douglas <4b7c0f16d6df8491ab57e52f3bc89464fb1ef2c5@google.com>

envoyproxy/envoy-wasm,lyft/envoy,dnoe/envoy,envoyproxy/envoy,lyft/envoy,dnoe/envoy,jrajahalme/envoy,envoyproxy/envoy,lizan/envoy,eklitzke/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,istio/envoy,jrajahalme/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,eklitzke/envoy,lyft/envoy,envoyproxy/envoy-wasm,lizan/envoy,jrajahalme/envoy,dnoe/envoy,istio/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,jrajahalme/envoy,dnoe/envoy,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,lizan/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,jrajahalme/envoy,eklitzke/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,lizan/envoy,lizan/envoy,istio/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,eklitzke/envoy,dnoe/envoy,istio/envoy