Change the current gosdn plugin implementation from Go's internal plugin system to hashicorp's go-plugins

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

controller/nucleus/pndFilesystemStore_test.go

@@ -11,10 +11,11 @@ import (
 func TestAddPnd(t *testing.T) {
 	defer ensureStoreFileForTestsIsRemoved(store.PndFilename)
 
-	pndStore := NewPndStore()
+	pluginServiceMock := NewPluginServiceMock()
+	pndStore := NewPndStore(pluginServiceMock)
 
 	pndID, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bad")
-	pnd, _ := NewPND("testpnd", "test", pndID, nil, nil)
+	pnd, _ := NewPND("testpnd", "test", pndID, nil, nil, pluginServiceMock, nil)
 
 	err := pndStore.Add(pnd)
 
@@ -26,11 +27,12 @@ func TestAddPnd(t *testing.T) {
 func TestGetAllPnds(t *testing.T) {
 	defer ensureStoreFileForTestsIsRemoved(store.PndFilename)
 
-	pndStore := NewPndStore()
+	pluginServiceMock := NewPluginServiceMock()
+	pndStore := NewPndStore(pluginServiceMock)
 	pndID1, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bad")
 	pndID2, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bab")
-	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil)
-	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil)
+	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil, pluginServiceMock, nil)
+	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil, pluginServiceMock, nil)
 
 	inputPnds := [2]networkdomain.NetworkDomain{pnd1, pnd2}
 
@@ -62,11 +64,12 @@ func TestGetAllPnds(t *testing.T) {
 func TestGetPnd(t *testing.T) {
 	defer ensureStoreFileForTestsIsRemoved(store.PndFilename)
 
-	pndStore := NewPndStore()
+	pluginServiceMock := NewPluginServiceMock()
+	pndStore := NewPndStore(pluginServiceMock)
 	pndID1, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bad")
 	pndID2, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bab")
-	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil)
-	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil)
+	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil, pluginServiceMock, nil)
+	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil, pluginServiceMock, nil)
 
 	inputPnds := [2]networkdomain.NetworkDomain{pnd1, pnd2}
 
@@ -96,11 +99,12 @@ func TestGetPnd(t *testing.T) {
 func TestDeletePnd(t *testing.T) {
 	defer ensureStoreFileForTestsIsRemoved(store.PndFilename)
 
-	pndStore := NewPndStore()
+	pluginServiceMock := NewPluginServiceMock()
+	pndStore := NewPndStore(pluginServiceMock)
 	pndID1, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bad")
 	pndID2, _ := uuid.Parse("b4016412-eec5-45a1-aa29-f59915357bab")
-	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil)
-	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil)
+	pnd1, _ := NewPND("testpnd", "test", pndID1, nil, nil, pluginServiceMock, nil)
+	pnd2, _ := NewPND("testpnd2", "test", pndID2, nil, nil, pluginServiceMock, nil)
 
 	inputPnds := [2]networkdomain.NetworkDomain{pnd1, pnd2}