Switch the failing test from test- to lib-only

Since now new-run can run tests too (but obviously not libs)

cabal-install/tests/IntegrationTests2.hs

@@ -869,9 +869,9 @@ testTargetProblemsRun config reportSubCase = do
       [ ( CmdRun.TargetProblemNoTargets, mkTargetPackage "p-0.1" )
       ]
 
-    reportSubCase "test-only"
+    reportSubCase "lib-only"
     assertProjectTargetProblems
-      "targets/test-only" config
+      "targets/lib-only" config
       CmdRun.selectPackageTargets
       CmdRun.selectComponentTarget
       CmdRun.TargetProblemCommon

cabal-install/tests/IntegrationTests2/targets/lib-only/p.cabal

+name: p
+version: 0.1
+build-type: Simple
+cabal-version: >= 1.2
+
+library
+  exposed-modules: P
+  build-depends: base