Add project metadata and repositories in resolution cache in SBT plugin

Fixes some publish or publishSigned commands failing, for some
modules having the same dependencies as others (thus previously the same
cache key, so no resolution was done and no Ivy file was generated,
which made the publish or publishSigned command complains).

plugin/src/main/scala-2.10/coursier/Tasks.scala

@@ -147,6 +147,8 @@ object Tasks {
 
   // FIXME More things should possibly be put here too (resolvers, etc.)
   private case class CacheKey(
+    project: Project,
+    repositories: Seq[Repository],
     resolution: Resolution,
     withClassifiers: Boolean,
     sbtClassifiers: Boolean
@@ -250,29 +252,29 @@ object Tasks {
         Files.write(cacheIvyPropertiesFile.toPath, "".getBytes("UTF-8"))
       }
 
+      if (verbosity >= 2) {
+        println("InterProjectRepository")
+        for (p <- projects)
+          println(s"  ${p.module}:${p.version}")
+      }
+
+      val globalPluginsRepo = IvyRepository(
+        new File(sys.props("user.home") + "/.sbt/0.13/plugins/target/resolution-cache/").toURI.toString +
+          "[organization]/[module](/scala_[scalaVersion])(/sbt_[sbtVersion])/[revision]/resolved.xml.[ext]",
+        withChecksums = false,
+        withSignatures = false,
+        withArtifacts = false
+      )
+
+      val interProjectRepo = InterProjectRepository(projects)
+
+      val ivyProperties = Map(
+        "ivy.home" -> (new File(sys.props("user.home")).toURI.getPath + ".ivy2")
+      ) ++ sys.props
+
+      val repositories = Seq(globalPluginsRepo, interProjectRepo) ++ resolvers.flatMap(FromSbt.repository(_, ivyProperties))
+
       def report = {
-        if (verbosity >= 2) {
-          println("InterProjectRepository")
-          for (p <- projects)
-            println(s"  ${p.module}:${p.version}")
-        }
-
-        val globalPluginsRepo = IvyRepository(
-          new File(sys.props("user.home") + "/.sbt/0.13/plugins/target/resolution-cache/").toURI.toString +
-            "[organization]/[module](/scala_[scalaVersion])(/sbt_[sbtVersion])/[revision]/resolved.xml.[ext]",
-          withChecksums = false,
-          withSignatures = false,
-          withArtifacts = false
-        )
-
-        val interProjectRepo = InterProjectRepository(projects)
-
-        val ivyProperties = Map(
-          "ivy.home" -> (new File(sys.props("user.home")).toURI.getPath + ".ivy2")
-        ) ++ sys.props
-
-        val repositories = Seq(globalPluginsRepo, interProjectRepo) ++ resolvers.flatMap(FromSbt.repository(_, ivyProperties))
-
         val pool = Executors.newFixedThreadPool(parallelDownloads, Strategy.DefaultDaemonThreadFactory)
 
         def createLogger() = new TermDisplay(new OutputStreamWriter(System.err))
@@ -452,7 +454,13 @@ object Tasks {
       }
 
       resolutionsCache.getOrElseUpdate(
-        CacheKey(startRes.copy(filter = None), withClassifiers, sbtClassifiers),
+        CacheKey(
+          currentProject,
+          repositories,
+          startRes.copy(filter = None),
+          withClassifiers,
+          sbtClassifiers
+        ),
         report
       )
     }