[Enhancement] [PANW] Make enhancement in connector with best practices implementation

[vinit-chauhan]

Type of change

• Enhancement

What does this PR do?

Make enhancement in PANW connector with listed best practices.

Sr. No.	Best Practices
1	Verify best practices test cases are executed
2	Verify all automated tests
3	Verify default values of port for TCP, UDP or HTTP Endpoint Input
4	Verify that the data is ingested in kibana for in interval
5	Verify all fields are correctly mapped for all Data streams
6	Verify related.ip field in datastream
7	Verify related.hash field in datastream
8	Verify related.hosts field in datastream
9	Verify related.user field in datastream
10	Verify network.protocol is in lowercase form
11	Verify network.transport is in lowercase form
12	Verify very long syslog message
13	Verify on-failure on convert processor
14	Verify MAC address should be separated by dash and value should be an array and MAC address should be valid. MAC address is in uppercase form
15	Verify visualizations are not linked with library
16	Verify format of title of visualizations
17	Verify format of title of dashboard
18	Verify Datastream Dashboard
19	Verify filters in visualizations
20	Verify visualizations in different browser
21	Verify README file

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.

How to test this PR locally

• Clone integrations repo.
• Install elastic package locally.
• Start elastic stack using elastic-package.
• Move to integrations/packages/panw directory.
• Run the following command to run tests.

elastic-package test

Related issues

• Relates Make enhancement in connectors with best practices implementation #4535

Screenshots

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Build stats

• Start Time: 2022-11-18T11:36:55.229+0000

• Duration: 195 min 17 sec

Test stats 🧪

Test	Results
Failed	0
Passed	51
Skipped	0
Total	51

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (15/15)	💚
Classes	100.0% (15/15)	💚
Methods	98.529% (67/68)	❕
Lines	93.797% (3251/3466)	❕
Conditionals	100.0% (0/0)	💚