MM-36764 mlog refactor (#18118)

Refactor mlog
- simplify mlog by removing redundant code
- remove Zap dependency
- update unit test helpers
- update logging config
- update auditing

go.mod

@@ -50,7 +50,7 @@ require (
 	github.com/hashicorp/go-hclog v0.16.1
 	github.com/hashicorp/go-immutable-radix v1.3.0 // indirect
 	github.com/hashicorp/go-msgpack v1.1.5 // indirect
-	github.com/hashicorp/go-multierror v1.1.1
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/hashicorp/go-plugin v1.4.2
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
@@ -72,7 +72,8 @@ require (
 	github.com/mattermost/gosaml2 v0.3.3
 	github.com/mattermost/gziphandler v0.0.1
 	github.com/mattermost/ldap v0.0.0-20201202150706-ee0e6284187d
-	github.com/mattermost/logr v1.0.13
+	github.com/mattermost/logr v1.0.13 // indirect
+	github.com/mattermost/logr/v2 v2.0.10
 	github.com/mattermost/rsc v0.0.0-20160330161541-bbaefb05eaa0
 	github.com/mattn/go-isatty v0.0.13 // indirect
 	github.com/mattn/go-runewidth v0.0.13 // indirect
@@ -102,7 +103,7 @@ require (
 	github.com/russellhaering/goxmldsig v1.1.0
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd
 	github.com/segmentio/backo-go v0.0.0-20200129164019-23eae7c10bd3 // indirect
-	github.com/sirupsen/logrus v1.8.1
+	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/smartystreets/assertions v1.0.0 // indirect
 	github.com/spf13/cobra v1.1.3
 	github.com/splitio/go-client/v6 v6.1.0
@@ -118,7 +119,7 @@ require (
 	github.com/ulikunitz/xz v0.5.10 // indirect
 	github.com/vmihailenco/msgpack/v5 v5.3.4
 	github.com/wiggin77/merror v1.0.3
-	github.com/wiggin77/srslog v1.0.1
+	github.com/wiggin77/srslog v1.0.1 // indirect
 	github.com/willf/bitset v1.1.11 // indirect
 	github.com/xtgo/uuid v0.0.0-20140804021211-a0b114877d4c
 	github.com/yuin/goldmark v1.3.8
@@ -126,7 +127,7 @@ require (
 	go.opentelemetry.io/otel/internal/metric v0.21.0 // indirect
 	go.uber.org/atomic v1.8.0 // indirect
 	go.uber.org/multierr v1.7.0 // indirect
-	go.uber.org/zap v1.17.0
+	go.uber.org/zap v1.17.0 // indirect
 	golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e
 	golang.org/x/image v0.0.0-20210622092929-e6eecd499c2c
 	golang.org/x/net v0.0.0-20210614182718-04defd469f4e
@@ -138,7 +139,7 @@ require (
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/ini.v1 v1.62.0 // indirect
 	gopkg.in/mail.v2 v2.3.1
-	gopkg.in/natefinch/lumberjack.v2 v2.0.0
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
 	gopkg.in/olivere/elastic.v6 v6.2.35
 	gopkg.in/yaml.v2 v2.4.0
 	willnorris.com/go/imageproxy v0.10.0