Bump version to v1.22.0-pre1

BUILD

@@ -78,7 +78,7 @@ g_stands_for = "gale"
 
 core_version = "7.0.0"
 
-version = "1.22.0-dev"
+version = "1.22.0-pre1"
 
 GPR_PUBLIC_HDRS = [
     "include/grpc/support/alloc.h",

build.yaml

@@ -14,7 +14,7 @@ settings:
   '#10': See the expand_version.py for all the quirks here
   core_version: 7.0.0
   g_stands_for: gale
-  version: 1.22.0-dev
+  version: 1.22.0-pre1
 filegroups:
 - name: alts_proto
   headers:

doc/g_stands_for.md

@@ -21,4 +21,4 @@
 - 1.19 'g' stands for ['gold'](https://github.com/grpc/grpc/tree/v1.19.x)
 - 1.20 'g' stands for ['godric'](https://github.com/grpc/grpc/tree/v1.20.x)
 - 1.21 'g' stands for ['gandalf'](https://github.com/grpc/grpc/tree/v1.21.x)
-- 1.22 'g' stands for ['gale'](https://github.com/grpc/grpc/tree/master)
+- 1.22 'g' stands for ['gale'](https://github.com/grpc/grpc/tree/v1.22.x)