Merge in 'release/2.1' changes

Author: dotnet-bot

buildpipeline/DotNet-CoreFx-Trusted-Linux-Crossbuild.json

@@ -546,7 +546,7 @@
     "type": "TfsGit",
     "name": "DotNet-CoreFX-Trusted",
     "url": "https://devdiv.visualstudio.com/DevDiv/_git/DotNet-CoreFX-Trusted",
-    "defaultBranch": "refs/heads/master",
+    "defaultBranch": "refs/heads/release/2.1",
     "clean": "false",
     "checkoutSubmodules": false
   },

buildpipeline/DotNet-CoreFx-Trusted-Linux.json

@@ -554,7 +554,7 @@
     "type": "TfsGit",
     "name": "DotNet-CoreFX-Trusted",
     "url": "https://devdiv.visualstudio.com/DevDiv/_git/DotNet-CoreFX-Trusted",
-    "defaultBranch": "refs/heads/master",
+    "defaultBranch": "refs/heads/release/2.1",
     "clean": "false",
     "checkoutSubmodules": false
   },

buildpipeline/DotNet-CoreFx-Trusted-Windows-NoTest.json

@@ -397,7 +397,7 @@
       "isSecret": true
     },
     "PB_SourceBranch": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "PB_Git": {

buildpipeline/DotNet-CoreFx-Trusted-Windows.json

@@ -483,7 +483,7 @@
       "value": "win10"
     },
     "PB_SourceBranch": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "PB_SyncArguments": {

buildpipeline/DotNet-Trusted-Publish-Symbols.json

@@ -261,11 +261,11 @@
       "allowOverride": true
     },
     "SourceVersion": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "SourceBranch": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "FeedPublishArguments": {

buildpipeline/DotNet-Trusted-Publish.json

@@ -456,11 +456,11 @@
       "allowOverride": true
     },
     "SourceVersion": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "SourceBranch": {
-      "value": "master",
+      "value": "release/2.1",
       "allowOverride": true
     },
     "FeedPublishArguments": {

buildpipeline/DotNet-Trusted-Tests-Publish.json

@@ -282,12 +282,12 @@
     "type": "TfsGit",
     "name": "DotNet-CoreFX-Trusted",
     "url": "https://devdiv.visualstudio.com/DevDiv/_git/DotNet-CoreFX-Trusted",
-    "defaultBranch": "refs/heads/master",
+    "defaultBranch": "refs/heads/release/2.1",
     "clean": "true",
     "checkoutSubmodules": false
   },
   "quality": "definition",
-  "defaultBranch": "refs/heads/master",
+  "defaultBranch": "refs/heads/release/2.1",
   "queue": {
     "pool": {
       "id": 39,