[release-1.11] removing parse url from the get rabbitmqUrl function

[knative-prow-robot]

This is an automated cherry-pick of #1239

Now Brokers and Sources accept broader rabbitmq url usernames and passwords characters to connect to RabbitMQ instances

[codecov]

Codecov Report

Merging #1259 (25ca3db) into release-1.11 (76794c0) will not change coverage.
The diff coverage is 53.84%.

@@              Coverage Diff              @@
##           release-1.11    #1259   +/-   ##
=============================================
  Coverage         74.69%   74.69%           
=============================================
  Files                44       44           
  Lines              3434     3434           
=============================================
  Hits               2565     2565           
  Misses              767      767           
  Partials            102      102           

Files	Coverage Δ
pkg/rabbit/exchange.go	100.00% <ø> (ø)
pkg/reconciler/broker/broker.go	86.12% <100.00%> (ø)
pkg/rabbit/service.go	29.25% <50.00%> (ø)

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gabo1208, knative-prow-robot

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[Cali0707]

/override codecov/patch

[knative-prow]

@Cali0707: Overrode contexts on behalf of Cali0707: codecov/patch

In response to this:

/override codecov/patch

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