Enhance pluginrpc-gen parser

Now handles `package.Type` and `*package.Type`
Fixes parsing issues with slice and map types.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

plugins/pluginrpc-gen/fixtures/foo.go

@@ -1,5 +1,17 @@
 package foo
 
+import (
+	"fmt"
+
+	aliasedio "io"
+
+	"github.com/docker/docker/pkg/plugins/pluginrpc-gen/fixtures/otherfixture"
+)
+
+var (
+	errFakeImport = fmt.Errorf("just to import fmt for imports tests")
+)
+
 type wobble struct {
 	Some      string
 	Val       string
@@ -22,6 +34,7 @@ type Fooer3 interface {
 	Qux(a, b string) (val string, err error)
 	Wobble() (w *wobble)
 	Wiggle() (w wobble)
+	WiggleWobble(a []*wobble, b []wobble, c map[string]*wobble, d map[*wobble]wobble, e map[string][]wobble, f []*otherfixture.Spaceship) (g map[*wobble]wobble, h [][]*wobble, i otherfixture.Spaceship, j *otherfixture.Spaceship, k map[*otherfixture.Spaceship]otherfixture.Spaceship, l []otherfixture.Spaceship)
 }
 
 // Fooer4 is an interface used for tests.
@@ -39,3 +52,38 @@ type Fooer5 interface {
 	Foo()
 	Bar
 }
+
+// Fooer6 is an interface used for tests.
+type Fooer6 interface {
+	Foo(a otherfixture.Spaceship)
+}
+
+// Fooer7 is an interface used for tests.
+type Fooer7 interface {
+	Foo(a *otherfixture.Spaceship)
+}
+
+// Fooer8 is an interface used for tests.
+type Fooer8 interface {
+	Foo(a map[string]otherfixture.Spaceship)
+}
+
+// Fooer9 is an interface used for tests.
+type Fooer9 interface {
+	Foo(a map[string]*otherfixture.Spaceship)
+}
+
+// Fooer10 is an interface used for tests.
+type Fooer10 interface {
+	Foo(a []otherfixture.Spaceship)
+}
+
+// Fooer11 is an interface used for tests.
+type Fooer11 interface {
+	Foo(a []*otherfixture.Spaceship)
+}
+
+// Fooer12 is an interface used for tests.
+type Fooer12 interface {
+	Foo(a aliasedio.Reader)
+}