Replace java.security.AccessController with org.opensearch.secure_sm.AccessController

[cwperks]

Description

Replace java.security.AccessController with org.opensearch.secure_sm.AccessController.

java.security.AccessController is marked for removal and needs to be replaced.

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[ps48]

@cwperks thanks for the PR. Is there a campaign to do this migration for all the opensearch backend plugins?

Can you please look at the build failure, should be a small linter fix:

> Task :ktlint
/Users/runner/work/observability/observability/src/main/kotlin/org/opensearch/observability/security/SecurityAccess.kt:18:88: Function body should be replaced with body expression (standard:function-expression-body)
21:10:53.539 [main] WARN com.pinterest.ktlint.cli.internal.KtlintCommandLine -- Lint has found errors than can be autocorrected using 'ktlint --format'

Summary error count (descending) by rule:
  standard:function-expression-body: 1

> Task :ktlint FAILED

> Task :compileKotlin
w: file:///Users/runner/work/observability/observability/src/main/kotlin/org/opensearch/observability/index/ObservabilityIndex.kt:101:22 'fun mapping(p0: String!, p1: XContentType!): CreateIndexRequest!' is deprecated. Deprecated in Java.
w: file:///Users/runner/work/observability/observability/src/main/kotlin/org/opensearch/observability/index/ObservabilityIndex.kt:102:22 'fun settings(p0: String!, p1: XContentType!): CreateIndexRequest!' is deprecated. Deprecated in Java.


FAILURE: Build failed with an exception.

[cwperks]

Ran ./gradlew ktlintFormat and pushed.