Clean up/organize script and json files in top level directory (#15453)

* Clean up/organize script and json files in top level directory

* Add eng/tools to coverage config and alphabetize it

eng/config.json

@@ -1,36 +1,36 @@
 {
     "Packages": [
         {
-            "Name": "azidentity",
-            "CoverageGoal": 0.68
-        },
-        {
-            "Name": "azcosmos",
-            "CoverageGoal": 0.40
+            "Name": "azblob",
+            "CoverageGoal": 0.45
         },
         {
             "Name": "azcore",
             "CoverageGoal": 0.85
         },
         {
-            "Name": "internal",
-            "CoverageGoal": 0.70
+            "Name": "azcosmos",
+            "CoverageGoal": 0.40
+        },
+        {
+            "Name": "azidentity",
+            "CoverageGoal": 0.68
+        },
+        {
+            "Name": "azsecrets",
+            "CoverageGoal": 0.76
         },
         {
             "Name": "data",
             "CoverageGoal": 0.62
         },
         {
-            "Name": "azblob",
-            "CoverageGoal": 0.45
+            "Name": "eng/tools",
+            "CoverageGoal": 0.0
         },
         {
-            "Name": "messaging",
-            "CoverageGoal": 0.10
-        }, 
-        {
-            "Name": "azsecrets",
-            "CoverageGoal": 0.76
+            "Name": "internal",
+            "CoverageGoal": 0.70
         },
         {
             "Name": "messaging",

eng/tools/generator/autorest/model/generateOptions.go

@@ -9,7 +9,7 @@ import (
 	"io/ioutil"
 )
 
-// GenerateOptions deserialize from generate_options.json file in root directory of azure-sdk-for-go
+// GenerateOptions deserialize from eng/generate_options.json file in root directory of azure-sdk-for-go
 type GenerateOptions struct {
 	AutorestArguments []string `json:"autorestArguments"`
 	AdditionalOptions []string `json:"additionalOptions,omitempty"`

eng/tools/generator/common/constants.go

@@ -5,7 +5,7 @@ package common
 
 const (
 	// DefaultOptionPath the default path of the option file
-	DefaultOptionPath = "generate_options.json"
+	DefaultOptionPath = "eng/generate_options.json"
 
 	Services          = "services"
 	ChangelogFilename = "CHANGELOG.md"

findTestedPackages.sh

@@ -1 +0,0 @@
-dirname $(find | grep _test.go | grep -v vendor) | sort -u

swagger_to_sdk_config.json

@@ -16,7 +16,7 @@
   },
   "initOptions": {
     "initScript": {
-      "path": "sh ./initScript.sh",
+      "path": "sh ./eng/initScript.sh",
       "stderr": {
         "scriptWarning": false
       }