Sonic sairedis changes for SAI SRV6

[kperumalbfn]

sairedis changes to support SAI SRV6 changes - opencomputeproject/SAI@2e934ff

Update SAI SEGMENTROUTE object to SAI SRV6 object
Serialize and deserialize APIs for SRV6 MY_SID_ENTRY object

These changes are needed to update Sonic SAI refpoint with SRV6 changes.

SAI refpoint with SRV6 update and this PR has to be merged together.

[kperumalbfn]

@kcudnik latest sairedis changes on top of your recent commits.

[kperumalbfn]

@kcudnik SAI tag with SRV6 changes is not yet created which is needed for Sonic 202111 release. This PR has to be merged along with that.

[kcudnik]

can you also make unittsts in sairedis/unittest, you will find there directory structure and you can follow the format

[kperumalbfn]

@kcudnik unittests are added for srv6

[kcudnik]

great, now please make this compile right :)

[kperumalbfn]

great, now please make this compile right :)

@kcudnik This PR has SAI dependencies. Compilation will be successful only when SAI refpoint is updated.

We need SAI tag with the below commit, may be SAI 1.9 for Sonic 202111 release.

opencomputeproject/SAI@2e934ff

[kcudnik]

you can update SAI pointer in the same pr

[kperumalbfn]

@kcudnik @rlhui Can we update Sonic's SAI refpoint to the latest one in SAI(v1.9.0-rc1)?

[kcudnik]

@lguohan can you response

Can we update Sonic's SAI refpoint to the latest one in SAI(v1.9.0-rc1)?

[kcudnik]

please fix conflicts

[kperumalbfn]

@kcudnik I have updated SAI version to 1.9.0 and added changes to new modules ipsec and my_mac.

[kperumalbfn]

please fix conflicts

Reports conflict in SAI submodule file. How do we resolve this?

[kperumalbfn]

@kcudnik Any steps before updating the SAI submodule? Please let me know if there are any steps to be followed.

[kperumalbfn]

@kcudnik closing this PR and opening a new one #937