[Azure Search] adding filter property for Autocomplete in SDK

[ishansrivastava90]

• includes generated code from swagger spec from azure-rest-api-specs:master
• added custom code to AutocompleteParameters for POST flavor of the API
• added tests for the property

[ishansrivastava90]

@brjohnstmsft FYI.

[brjohnstmsft]

@ishansrivastava90 The build failure appears to be a bug in another Azure service's SDK. I'll merge from master again to resolve it. Sorry for the inconvenience.

[brjohnstmsft]

Will merge once builds are passing

[ishansrivastava90]

@brjohnstmsft @dsgouda The CI/Travis-CI check is failing consistently with the message,

"E: Failed to fetch https://packages.microsoft.com/ubuntu/14.04/prod/dists/trusty/main/binary-amd64/Packages.gz Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.
The command "sudo apt-get update" failed and exited with 100 during."

Any ideas as to get this to pass?

[dsgouda]

@ishansrivastava90 We're taking a look

[ishansrivastava90]

@dsgouda Both @brjohnstmsft and I are going to be OOF for the 1st part of the next week. If the issue is determined and fixed before we are back, feel free to merge the PR.

[dsgouda]

@ishansrivastava90 Please pull lkatest changes from master and update this PR, that should fix the CI issues