RFR: 8303760: Visual Studio should use the primary variant in the IDE

[Julian Waters]

Currently support for Visual Studio development always assumes server as the variant to use. More accurately this should instead be set to the primary variant instead

-------------

Commit messages:
 - Visual Studio should use the primary variant in the IDE

Changes: https://git.openjdk.org/jdk/pull/12906/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12906&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303760
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/12906.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12906/head:pull/12906

PR: https://git.openjdk.org/jdk/pull/12906