[Azure] Add geo.name and result_description fields in platformlogs

[kaiyan-sheng]

What does this PR do?

Add missing field geo.name and azure.platformlogs.result_description field. Also when ingesting, make sure to convert durationMs to integer first if it's a string in the original log.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

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• Start Time: 2022-04-29T16:36:16.281+0000

• Duration: 13 min 16 sec

Test stats 🧪

Test	Results
Failed	0
Passed	86
Skipped	0
Total	86

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (6/6)	💚
Files	78.571% (11/14)	👎 -18.63
Classes	78.571% (11/14)	👎 -18.63
Methods	76.724% (89/116)	👎 -11.507
Lines	80.46% (1540/1914)	👎 -8.473
Conditionals	100.0% (0/0)	💚