Merge pull request #1882 from NuGet/staging

Staging -> QA (test only)
Add regression test for search syntax
Added some IP security functionality
Merge branch 'master' into qa
Fix the check for version spec
Merge pull request #1895 from NuGet/bhuvak-1893

Bug fixes for OData
Minor test update
Update to csproj to include missing test
Merge pull request #1911 from NuGet/master

Merge minor bug fixes to QA
Merge pull request #1918 from NuGet/qa

Qa -> Staging
Merge pull request #1919 from NuGet/staging

Staging -> Prod