Use new exclude_params query when retrieving jobs

[kt474]

Summary

fixes #635

Details and comments

[coveralls]

Pull Request Test Coverage Report for Build 5203000770

• 2 of 8 (25.0%) changed or added relevant lines in 3 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 51.802%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit_ibm_provider/api/clients/runtime.py	1	2	50.0%
qiskit_ibm_provider/ibm_backend_service.py	0	1	0.0%
qiskit_ibm_provider/api/rest/program_job.py	1	5	20.0%

Files with Coverage Reduction	New Missed Lines	%
qiskit_ibm_provider/ibm_backend_service.py	1	15.66%

Totals
Change from base Build 5180398317:	-0.03%
Covered Lines:	3133
Relevant Lines:	6048

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💛 - Coveralls

[merav-aharoni]

Looks good. A couple of questions/comments:

• Why is the lazy params not used on IQX?
• Perhaps add to the test loading of the parameters after first getting the job without _params. This will be helpful for users as a usage example.

[kt474]

Looks good. A couple of questions/comments:

• Why is the lazy params not used on IQX?
• Perhaps add to the test loading of the parameters after first getting the job witho
  ut _params. This will be helpful for users as a usage example.

The exclude_params parameter is brand new - I don't think IQX would need this parameter because they need the circuit/params on the job page, there's no need for lazy loading them.