UnitTestFrameworkPkg: Add configuration for Ecc check in yaml file

Add configuration ExceptionList and IgnoreFiles for package config
files. So users can rely on this to ignore some Ecc issues.
Besides, add submodule path in IgnoreFiles section.

Cc: Michael D Kinney <[email protected]>
Cc: Sean Brogan <[email protected]>
Cc: Bret Barkelew <[email protected]>
Signed-off-by: Shenglei Zhang <[email protected]>
Reviewed-by: Liming Gao <[email protected]>
Reviewed-by: Michael D Kinney <[email protected]>

UnitTestFrameworkPkg/UnitTestFrameworkPkg.ci.yaml

@@ -9,6 +9,18 @@
     "LicenseCheck": {
         "IgnoreFiles": []
     },
+    "EccCheck": {
+        ## Exception sample looks like below:
+        ## "ExceptionList": [
+        ##     "<ErrorID>", "<KeyWord>"
+        ## ]
+        "ExceptionList": [
+        ],
+        ## Both file path and directory path are accepted.
+        "IgnoreFiles": [
+            "Library/CmockaLib/cmocka"
+        ]
+    },
     ## options defined .pytool/Plugin/CompilerPlugin
     "CompilerPlugin": {
         "DscPath": "UnitTestFrameworkPkg.dsc"