chore(*): changing compilation options for tests

Author: kdinev

angular.json

@@ -166,7 +166,7 @@
     },
     "igniteui-angular": {
       "root": "projects/igniteui-angular",
-      "sourceRoot": "projects/igniteui-angular/src",
+      "sourceRoot": "projects/igniteui-angular",
       "projectType": "library",
       "prefix": "lib",
       "architect": {
@@ -204,7 +204,12 @@
               ]
             },
             "tsConfig": "projects/igniteui-angular/tsconfig.spec.json",
-            "karmaConfig": "projects/igniteui-angular/karma.conf.js"
+            "karmaConfig": "projects/igniteui-angular/karma.conf.js",
+            "codeCoverage": true,
+            "exclude": [
+                "migrations",
+                "schematics"
+            ]
           }
         },
         "lint": {