Fix test cases for WebAssembly Support

Author: kateinoigakukun

Tests/BuildTests/BuildPlanTests.swift

@@ -2130,14 +2130,14 @@ final class BuildPlanTests: XCTestCase {
                     inputs: ["/path/to/build/debug/exe.swiftmodule"]
                     outputs: ["/path/to/build/debug/exe.build/exe.swiftmodule.o"]
                     description: "Wrapping AST for exe for debugging"
-                    args: ["/fake/path/to/swiftc","-modulewrap","/path/to/build/debug/exe.swiftmodule","-o","/path/to/build/debug/exe.build/exe.swiftmodule.o"]
+                    args: ["/fake/path/to/swiftc","-modulewrap","/path/to/build/debug/exe.swiftmodule","-o","/path/to/build/debug/exe.build/exe.swiftmodule.o","-target","x86_64-unknown-linux-gnu"]
 
                   "/path/to/build/debug/lib.build/lib.swiftmodule.o":
                     tool: shell
                     inputs: ["/path/to/build/debug/lib.swiftmodule"]
                     outputs: ["/path/to/build/debug/lib.build/lib.swiftmodule.o"]
                     description: "Wrapping AST for lib for debugging"
-                    args: ["/fake/path/to/swiftc","-modulewrap","/path/to/build/debug/lib.swiftmodule","-o","/path/to/build/debug/lib.build/lib.swiftmodule.o"]
+                    args: ["/fake/path/to/swiftc","-modulewrap","/path/to/build/debug/lib.swiftmodule","-o","/path/to/build/debug/lib.build/lib.swiftmodule.o","-target","x86_64-unknown-linux-gnu"]
                 """))
         }
     }

Tests/PackageLoadingTests/PackageBuilderTests.swift

@@ -1524,6 +1524,7 @@ class PackageBuilderTests: XCTestCase {
             "tvos": "9.0",
             "watchos": "2.0",
             "android": "0.0",
+            "wasi": "0.0",
         ]
 
         PackageBuilderTester(manifest, in: fs) { package, _ in
@@ -1560,6 +1561,7 @@ class PackageBuilderTests: XCTestCase {
             "ios": "8.0",
             "watchos": "2.0",
             "android": "0.0",
+            "wasi": "0.0",
         ]
 
         PackageBuilderTester(manifest, in: fs) { package, _ in