Alerting: Fix AM config overwrite when SQLite db is locked during sync (#50951) (#50996)

If SQLite is used and the database is locked temporarily (ex. heavy write-load) during periodic
AM config sync, it was possible for your AM config to be overwritten with the default one.

This fixes that by patching a bug in xorm v0.8.2 which was causing SQLITE_BUSY errors to be ignored
in certain cases.

(cherry picked from commit 8f5912b94c)

Co-authored-by: Matthew Jacobson <matthew.jacobson@grafana.com>

go.mod

@@ -334,3 +334,8 @@ replace github.com/tidwall/match => github.com/tidwall/match v1.1.1
 replace github.com/hashicorp/go-hclog => github.com/hashicorp/go-hclog v0.16.1
 
 replace github.com/microcosm-cc/bluemonday => github.com/microcosm-cc/bluemonday v1.0.18
+
+// This is a patched v0.8.2 intended to fix session.Find (and others) silently ignoring SQLITE_BUSY errors. This could
+// happen, for example, during a read when the sqlite db is under heavy write load.
+// This patch cherry picks compatible fixes from upstream xorm PR#1998 and can be reverted on upgrade to xorm v1.2.0+.
+replace xorm.io/xorm => github.com/grafana/xorm v0.8.3-0.20220614223926-2fcda7565af6

go.sum

@@ -1462,6 +1462,8 @@ github.com/grafana/saml v0.0.0-20211007135653-aed1b2edd86b/go.mod h1:q83kyQoMD0v
 github.com/grafana/sqlds/v2 v2.3.2/go.mod h1:34uyqPBWsEvg4V/xxh6V4uIqwu1qLfOfsmScll/ukrk=
 github.com/grafana/thema v0.0.0-20220523183731-72aebd14e751 h1:5PpsfN52XA0hxOjD/qQ0QNiEkp9Y9Tb+yz/Hj9fyL4M=
 github.com/grafana/thema v0.0.0-20220523183731-72aebd14e751/go.mod h1:KuqTKX9lfM87uu9vt9DS/q+REqSrAm2xYMnBBvlmevA=
+github.com/grafana/xorm v0.8.3-0.20220614223926-2fcda7565af6 h1:I9dh1MXGX0wGyxdV/Sl7+ugnki4Dfsy8lv2s5Yf887o=
+github.com/grafana/xorm v0.8.3-0.20220614223926-2fcda7565af6/go.mod h1:ZkJLEYLoVyg7amJK/5r779bHyzs2AU8f8VMiP6BM7uY=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
@@ -3979,5 +3981,3 @@ xorm.io/builder v0.3.6/go.mod h1:LEFAPISnRzG+zxaxj2vPicRwz67BdhFreKg8yv8/TgU=
 xorm.io/core v0.7.2/go.mod h1:jJfd0UAEzZ4t87nbQYtVjmqpIODugN6PD2D9E+dJvdM=
 xorm.io/core v0.7.3 h1:W8ws1PlrnkS1CZU1YWaYLMQcQilwAmQXU0BJDJon+H0=
 xorm.io/core v0.7.3/go.mod h1:jJfd0UAEzZ4t87nbQYtVjmqpIODugN6PD2D9E+dJvdM=
-xorm.io/xorm v0.8.2 h1:nbg1AyWn7iLrwp0Dqg8IrYOBkBYYJ85ry9bvZLVl4Ok=
-xorm.io/xorm v0.8.2/go.mod h1:ZkJLEYLoVyg7amJK/5r779bHyzs2AU8f8VMiP6BM7uY=