CodeGen from PR 18440 in Azure/azure-rest-api-specs

Azure Networking 2021-08-01 release of monthly branch (Azure#18440)

* Adds base for updating Microsoft.Network from version stable/2021-05-01 to version 2021-08-01

* Updates readme

* Updates API version in new specs and examples

* Add AppGw swagger changes for L4 proxy (Azure#17561)

* Add AppGw swagger changes for L4 proxy

* Fix Lint Errors

* fix prettier checks

* HubRoutingPreference in VirtualHub (Azure#17609)

* commit1

* commit2

Co-authored-by: Khushboo Baheti <khbaheti@microsoft.com>

* MultipleApipa feature VpnSiteLinkConnection and  VirtualNetworkGatewayConnection (Azure#17672)

* VngConnection

* VpnSiteLinkConnection

* fixes

* fixes

* fix2

* fixes

Co-authored-by: Khushboo Baheti <khbaheti@microsoft.com>

* Virtual Wan P2S MultiPool feature swagger changes (Azure#17620)

* Virtual Wan P2S MultiPool feature swagger changes

* Fix Swagger LintDiff errors

* Fix LintDiff errors

* Fix errors

* Fix spec

* Fix spec

* Fix spec

* Fix LintDiff errors

* Fix LintDiff errors

* Fix SDK azure-sdk-for-net generation error

* Remove suppression

* Fix errors

* Fix Lintdiff error

* Fix PrettierCheck

* changes (Azure#18002)

* Revert "changes (Azure#18002)" (Azure#18014)

This reverts commit 320ed6a6fc5a68e8af43da303f8e1caaacf24708.

* Add nic auxiliary mode (Azure#17577)

* Add nic auxiliary mode

* fix spacing

* Fixing prettier check

* Restoring package-lock file

* Restoring package json

Co-authored-by: Prachi Bhavsar <prbhavsar@microsoft.com>

* Connection Draining add new properties (Azure#18052)

* merge

* fix

* fix

* Adding express route port authorization apis (Azure#17582)

* adding apis and updating resource to support ports auth

* moving change to 2021-08-01

* minor: removing change from 2020-07-01

* lintdiff : adding type object

* minor: fixing prettier

* adding authorizations to ports property

* fixing circuitResourceUri property name

* fixing model validation

* changing circuit resource uri type to string

* removing authorizations child reosurce from parent property

* Fix Azure Firewall Policy regressions. Back fix validation issues (Azure#18233)

* Fix regressions in Firewall Policy Swagger / give firewallPolicy.json some love

* Additional lint violations

* remove breaking changes for next time. TO DO

* Revert "remove breaking changes for next time. TO DO"

This reverts commit 8f44a174c73c02d18d829f6dfb1d990488770b23.

* Reintroduce api-version for idps signature based routes. Create better names for enums to be generated in SDKs

* standardize enum names with FirewallPolicy prefix

* Azure Firewall Support of Private IP Ranges in IDPS (Azure#18320)

* Azure Firewall Support of Private IP Ranges in IDPS

* make sure all arrays have x-ms-identifiers

* FirewallPolicy not Firewall policy

fix spellcheck validation

* Ability to update tags on firewall policies (Azure#18322)

* Support updating of Azure Firewall Policy Tags. Includes HTTP Patch example

* Use common-types ErrorDetail

* Ability to update tags for Firewall Policies

* spell check fix for firewallpolicy

* Use future release api-version for example

* Added flush conn to nsg (Azure#18393)

* Added flush conn to nsg

* Updated flushConn to correct location

* Updated description

* Modified T/F to Enabled/Disabled

* Refactoring so that null value appears first

* Reverted FlushConnection to boolean value instead of string

* Revert "Added flush conn to nsg (Azure#18393)" (Azure#18576)

This reverts commit 6541d305880d1cf580496adc01f55197a01e992c.

* Fixing typo in response of idps private ip range feature (Azure#18574)

* Use common-type api version (Azure#18729)

Co-authored-by: Ben Eshed <bewaters@microsoft.com>

* fix (Azure#18417)

Co-authored-by: Tianen <347142915@qq.com>
Co-authored-by: gk-ms <97893166+gk-ms@users.noreply.github.com>
Co-authored-by: Khushboo Baheti <37917868+Khushboo-Baheti@users.noreply.github.com>
Co-authored-by: Khushboo Baheti <khbaheti@microsoft.com>
Co-authored-by: Nilambari <nilamd@microsoft.com>
Co-authored-by: nimaller <71352534+nimaller@users.noreply.github.com>
Co-authored-by: pracsb <78512712+pr-work@users.noreply.github.com>
Co-authored-by: Prachi Bhavsar <prbhavsar@microsoft.com>
Co-authored-by: Matthew Yang <79727592+matyang22@users.noreply.github.com>
Co-authored-by: utbarn-ms <66377251+utbarn-ms@users.noreply.github.com>
Co-authored-by: Ben Eshed <thebenwaters@users.noreply.github.com>
Co-authored-by: Satya-anshu <70507845+Satya-anshu@users.noreply.github.com>
Co-authored-by: bewaterspassover <103988461+bewaterspassover@users.noreply.github.com>
Co-authored-by: Ben Eshed <bewaters@microsoft.com>