fix #4568, allow user to set tunnel bind address

[fengxx]

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[azure-client-tools-bot-prd]

⚠️Azure CLI Extensions Breaking Change Test

⚠️bastion

rule	cmd_name	rule_message	suggest_message
⚠️ 1006 - ParaAdd	network bastion tunnel	cmd network bastion tunnel added parameter bind_host

[azure-client-tools-bot-prd]

Hi @fengxx,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[microsoft-github-policy-service]

Thank you for your contribution fengxx! We will review the pull request and get back to you soon.

[fengxx]

@microsoft-github-policy-service agree

[fengxx]

style checks were not caused by the PR

src\bastion\azext_bastion\custom.py:159:0: C0301: Line too long (130/120) (line-too-long)
src\bastion\azext_bastion\custom.py:265:0: C0301: Line too long (146/120) (line-too-long)
src\bastion\azext_bastion\custom.py:269:0: C0301: Line too long (130/120) (line-too-long)
src\bastion\azext_bastion\custom.py:378:0: C0301: Line too long (130/120) (line-too-long)
src\bastion\azext_bastion\custom.py:387:0: C0301: Line too long (154/120) (line-too-long)
src\bastion\azext_bastion\custom.py:396:0: C0301: Line too long (126/120) (line-too-long)
src\bastion\azext_bastion\custom.py:401:0: C0301: Line too long (125/120) (line-too-long)
src\bastion\azext_bastion\custom.py:231:0: R0914: Too many local variables (28/25) (too-many-locals)
src\bastion\azext_bastion\custom.py:258:8: W0107: Unnecessary pass statement (unnecessary-pass)