Release notes for Grafana 9.1.7

Chore: Upgrade Go version to 1.19.1 (backport). #55733, @sakjur
CloudWatch: Add missing AWS/Prometheus metrics. #54990, @jangaraj
Explore: Add feature tracking events. #54514, @L-M-K-B
Graphite: Add error information to graphite queries tracing. #55249, @jesusvazquez
Prometheus: Restore FromAlert header. #55255, @kylebrandt
SAML: Account for all orgs in org_mapping (#3855). (Enterprise)
Search: Add search index configuration options. #55525, @ArturWierzbicki
Thresholds: Add option for dashed line style. #55875, @leeoniya

Alerting: Fix default query's data source when no default datasource specified. #55435, @konrad147
Alerting: Fix mathexp.NoData cannot be reduced. #55347, @grobinson-grafana
Alerting: Skip unsupported file types on provisioning. #55573, @JohnnyQQQQ
AzureMonitor: Ensure resourceURI template variable is migrated. #56095, @aangelisc
Dashboard: Fix plugin dashboard save as button. #55197, @lpskdl
Docs: Fix decimals: auto docs for panel edit. #55477, @joshhunt
Fix: RBAC handle error no resolver found. #55676, @gamab
Fix: RBAC handle error no resolver found. (Enterprise)
LibraryPanelSearch: Refactor and fix hyphen issue. #55314, @kaydelaney
Live: Fix live streaming with live-service-web-worker feature flag enabled. #55528, @ArturWierzbicki
QueryField: Fix wrong cursor position on autocomplete. #55576, @svennergr