Merge pull request #10 from grafana/20230807_sync_upstream

20230807 sync upstream (1.7.1)

Merge pull request #9 from grafana/20220719_add_cc_lookup

adds support for credential cache lookup via env variable

Merge pull request #8 from grafana/20210928_debug_output

Add debug output

Merge pull request #7 from grafana/20210721_fix_realm_usage

use spn supplied realm

update module name

Merge pull request #4 from grafana/add-ccache

Kerberos: Support credential cache

Merge pull request #3 from grafana/20210827_kerb_workaround

remove kerberos support for windows

Merge pull request #2 from grafana/20210820_add_gosum

add go sum

Merge pull request #1 from grafana/20210820_add_mysql_krb5

basic kerberos support for enterprise mysql

Release v1.6.0 (go-sql-driver#1197)

* Release v1.6.0

* v1.6.0 is released on 2021-04-01