message: use the correct install test path
diff: "architectures": [
  "x86"
  ],
  - "installTestPath": "./.omnisharp/OmniSharp.exe",
  + "installTestPath": "./.omnisharp/1.30.1/OmniSharp.exe",
  "platformId": "win-x86"
  },
  {
  "architectures": [
  "x86_64"
  ],
  - "installTestPath": "./.omnisharp/OmniSharp.exe",
  + "installTestPath": "./.omnisharp/1.30.1/OmniSharp.exe",
  "platformId": "win-x64"
  },
  {
  "./mono.osx",
  "./run"
  ],
  - "installTestPath": "./.omnisharp/run",
  + "installTestPath": "./.omnisharp/1.30.1/run",
  "platformId": "osx"
  },
  {
  "./mono.linux-x86",
  "./run"
  ],
  - "installTestPath": "./.omnisharp/run",
  + "installTestPath": "./.omnisharp/1.30.1/run",
  "platformId": "linux-x86"
  },
  {
  "./mono.linux-x86_64",
  "./run"
  ],
  - "installTestPath": "./.omnisharp/run",
  + "installTestPath": "./.omnisharp/1.30.1/run",
  "platformId": "linux-x64"
  },
  {
  