[chore] Move Datadog E2E tests and examples (#43629)

#### Description

#42805 moved Datadog's E2E tests into `internal/e2e`, and the example
configurations used as part of the tests into `internal/e2e/examples`.
The intent was to move the tests into `internal/datadog/e2e` instead,
but it looks like this change was accidentally reverted during a force
push. Moreover, it seems that moving the example configs created some
broken links (eg. [here,
"collector.yaml"](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/datadogexporter#datadog-exporter),
[here, "example
configuration"](https://docs.datadoghq.com/opentelemetry/setup/collector_exporter/deploy/?tab=gateway#kubernetes)).

This PR:
- moves `internal/e2e` to `internal/datadog/e2e`
- moves the example configs back to their original location to restore
these links

Author: jade-guiton-dd

.chloggen/config.yaml

@@ -128,8 +128,8 @@ components:
     - internal/common
     - internal/coreinternal
     - internal/datadog
+    - internal/datadog/e2e
     - internal/docker
-    - internal/e2e
     - internal/exp/metrics
     - internal/filter
     - internal/grpcutil

.github/CODEOWNERS

@@ -140,8 +140,8 @@ internal/collectd/                                               @open-telemetry
 internal/common/                                                 @open-telemetry/collector-contrib-approvers @open-telemetry/collector-approvers
 internal/coreinternal/                                           @open-telemetry/collector-contrib-approvers @open-telemetry/collector-approvers
 internal/datadog/                                                @open-telemetry/collector-contrib-approvers @mx-psi @dineshg13 @liustanley @songy23 @mackjmr @ankitpatel96 @jade-guiton-dd @IbraheemA @jackgopack4
+internal/datadog/e2e/                                            @open-telemetry/collector-contrib-approvers @mx-psi @dineshg13 @liustanley @songy23 @mackjmr @ankitpatel96 @jade-guiton-dd @IbraheemA
 internal/docker/                                                 @open-telemetry/collector-contrib-approvers @jamesmoessis @MovieStoreGuy
-internal/e2e/                                                    @open-telemetry/collector-contrib-approvers @mx-psi @dineshg13 @liustanley @songy23 @mackjmr @ankitpatel96 @jade-guiton-dd @IbraheemA
 internal/exp/metrics/                                            @open-telemetry/collector-contrib-approvers @RichieSams
 internal/filter/                                                 @open-telemetry/collector-contrib-approvers @open-telemetry/collector-approvers
 internal/grpcutil/                                               @open-telemetry/collector-contrib-approvers @jmacd @moh-osman3 @lquerel

.github/ISSUE_TEMPLATE/beta_stability.yaml

@@ -139,8 +139,8 @@ body:
       - internal/common
       - internal/core
       - internal/datadog
+      - internal/datadog/e2e
       - internal/docker
-      - internal/e2e
       - internal/exp/metrics
       - internal/filter
       - internal/grpcutil

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -142,8 +142,8 @@ body:
       - internal/common
       - internal/core
       - internal/datadog
+      - internal/datadog/e2e
       - internal/docker
-      - internal/e2e
       - internal/exp/metrics
       - internal/filter
       - internal/grpcutil

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -136,8 +136,8 @@ body:
       - internal/common
       - internal/core
       - internal/datadog
+      - internal/datadog/e2e
       - internal/docker
-      - internal/e2e
       - internal/exp/metrics
       - internal/filter
       - internal/grpcutil

.github/ISSUE_TEMPLATE/other.yaml

@@ -136,8 +136,8 @@ body:
       - internal/common
       - internal/core
       - internal/datadog
+      - internal/datadog/e2e
       - internal/docker
-      - internal/e2e
       - internal/exp/metrics
       - internal/filter
       - internal/grpcutil

.github/ISSUE_TEMPLATE/unmaintained.yaml

@@ -141,8 +141,8 @@ body:
       - internal/common
       - internal/core
       - internal/datadog
+      - internal/datadog/e2e
       - internal/docker
-      - internal/e2e
       - internal/exp/metrics
       - internal/filter
       - internal/grpcutil

.github/component_labels.txt

@@ -121,8 +121,8 @@ internal/collectd internal/collectd
 internal/common internal/common
 internal/coreinternal internal/core
 internal/datadog internal/datadog
+internal/datadog/e2e internal/datadog/e2e
 internal/docker internal/docker
-internal/e2e internal/e2e
 internal/exp/metrics internal/exp/metrics
 internal/filter internal/filter
 internal/grpcutil internal/grpcutil