[7.x] Update beats framework to a8a3208 (#3303)

* add vendor origins

* manually add origins for github.com/aws/aws-sdk-go-v2/service/elasticloadbalancingv2

* fix github.com/dop251/goja/... origins

* Update beats framework to a8a3208

* update beats dep github.com/aws/aws-sdk-go-v2/service/ec2/

NOTICE.txt

@@ -621,7 +621,7 @@ SOFTWARE.
 --------------------------------------------------------------------
 Dependency: github.com/elastic/beats
 Version: 7.x
-Revision: 32f1a9eb60b45a7157d9b9bcc7d626182baad633
+Revision: a8a3208373c6bc8bd783e0d03064baac8fafa44c
 License type (autodetected): Apache-2.0
 ./vendor/github.com/elastic/beats/LICENSE.txt:
 --------------------------------------------------------------------
@@ -3928,7 +3928,6 @@ Apache License 2.0
 
 --------------------------------------------------------------------
 Dependency: google.golang.org/grpc
-Version: v1.25
 Revision: 1a3960e4bd028ac0cec0a2afd27d7d8e67c11514
 License type (autodetected): Apache-2.0
 ./vendor/google.golang.org/grpc/LICENSE:

_beats/CHANGELOG.next.asciidoc

@@ -42,6 +42,7 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 
 - kubernetes.container.cpu.limit.cores and kubernetes.container.cpu.requests.cores are now floats. {issue}11975[11975]
 - Update cloudwatch metricset mapping for both metrics and dimensions. {pull}15245[15245]
+- Make use of secure port when accessing Kubelet API {pull}16063[16063]
 
 *Packetbeat*
 
@@ -69,6 +70,8 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Do not load dashboards where not available. {pull}15802[15802]
 - Fix issue where default go logger is not discarded when either * or stdout is selected. {issue}10251[10251] {pull}15708[15708]
 - Fix issue where TLS settings would be ignored when a forward proxy was in use. {pull}15516{15516}
+- Remove superfluous use of number_of_routing_shards setting from the default template. {pull}16038[16038]
+- Fix index names for indexing not always guaranteed to be lower case. {pull}16081[16081]
 
 *Auditbeat*
 
@@ -90,6 +93,10 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Add shared_credential_file to cloudtrail config {issue}15652[15652] {pull}15656[15656]
 - Fix typos in zeek notice fileset config file. {issue}15764[15764] {pull}15765[15765]
 - Fix mapping error when zeek weird logs do not contain IP addresses. {pull}15906[15906]
+- Prevent Elasticsearch from spewing log warnings about redundant wildcards when setting up ingest pipelines for the `elasticsearch` module. {issue}15840[15840] {pull}15900[15900]
+- Fix mapping error for cloudtrail additionalEventData field {pull}16088[16088]
+- Fix a connection error in httpjson input. {pull}16123[16123]
+- Improve `elasticsearch/audit` fileset to handle timestamps correctly. {pull}15942[15942]
 
 *Heartbeat*
 
@@ -114,11 +121,14 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fix CPU count in docker/cpu in cases where no `online_cpus` are reported {pull}15070[15070]
 - Add dedot for tags in ec2 metricset and cloudwatch metricset. {issue}15843[15843] {pull}15844[15844]
 - Use RFC3339 format for timestamps collected using the SQL module. {pull}15847[15847]
+- Change lookup_fields from metricset.host to service.address {pull}15883[15883]
 - Avoid parsing errors returned from prometheus endpoints. {pull}15712[15712]
 - Add dedot for cloudwatch metric name. {issue}15916[15916] {pull}15917[15917]
+- Fixed issue `logstash-xpack` module suddenly ceasing to monitor Logstash. {issue}15974[15974] {pull}16044[16044]
 
 *Packetbeat*
 
+- Enable setting promiscuous mode automatically. {pull}11366[11366]
 
 *Winlogbeat*
 
@@ -149,7 +159,7 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fingerprint processor adds a new xxhash hashing algorithm {pull}15418[15418]
 - Enable DEP (Data Execution Protection) for Windows packages. {pull}15149[15149]
 - Add document_id setting to decode_json_fields processor. {pull}15859[15859]
-
+- Add `aws_ec2` provider for autodiscover. {issue}12518[12518] {pull}14823[14823]
 
 *Auditbeat*
 
@@ -174,6 +184,9 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Remove Beta label from google-pubsub input. {issue}13346[13346] {pull}14715[14715]
 - Set event.outcome field based on googlecloud audit log output. {pull}15731[15731]
 - Add dashboard for AWS vpcflow fileset. {pull}16007[16007]
+- Add ECS tls fields to zeek:smtp,rdp,ssl and aws:s3access,elb {issue}15757[15757] {pull}15935[15936]
+- move create-[module,fileset,fields] to mage and enable in x-pack/filebeat {pull}15836[15836]
+- Add ECS tls and categorization fields to apache module. {issue}16032[16032] {pull}16121[16121]
 
 *Heartbeat*
 
@@ -206,7 +219,9 @@ https:/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Add `up` metric to prometheus metrics collected from host {pull}15948[15948]
 - Add citadel metricset for Istio Metricbeat module {pull}15990[15990]
 - Add support for processors in light modules. {issue}14740[14740] {pull}15923[15923]
+- Add collecting AuroraDB metrics in rds metricset. {issue}14142[14142] {pull}16004[16004]
 - Reuse connections in SQL module. {pull}16001[16001]
+- Improve the `logstash` module (when `xpack.enabled` is set to `true`) to use the override `cluster_uuid` returned by Logstash APIs. {issue}15772[15772] {pull}15795[15795]
 
 *Packetbeat*