Disable testPackageManagerDefineAndXArgs
Disable testPackageManagerDefineAndXArgs

This test fails spuriously but rather frequently on linux recently.

SR-12902

abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager