This PR is migrating some of the ITs that use either the
`elasticsearch.legacy-java-rest-test` or the
`elasticsearch.legacy-yaml-rest-test` gradle test plugins to the new
`elasticsearch.internal-java-rest-test` and
`elasticsearch.internal-yaml-rest-test` equivalents. This is the list of
the affected ITs: * SamlAuthenticationIT * OperatorPrivilegesIT *
ProfileIT * SetSecurityUserProcessorWithWithSecurityDisabledIT *
AsyncSearchSecurityIT * SecurityRealmSmokeTestCase *
KibanaSystemIndexIT * KerberosAuthenticationIT * ReindexWithSecurityIT
and ReindexWithSecurityClientYamlTestSuiteIT *
ReloadSecureSettingsWithPasswordProtectedKeystoreRestIT * PermissionsIT
from slm:qa:with-security * Permissions IT from
runtime-fields:with-security * Permissions IT from ilm:qa:with-securiy
* GraphWithSecurityIT and GraphWithSecurityInsufficientRoleIT
Related: ES-6751
d6df838307