fix workflow security tests in alerting (#1310)

Signed-off-by: Subhobrata Dey <sbcd90@gmail.com>
(cherry picked from commit 32718e8)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

alerting/src/test/kotlin/org/opensearch/alerting/resthandler/SecureWorkflowRestApiIT.kt

@@ -394,6 +394,7 @@ class SecureWorkflowRestApiIT : AlertingRestTestCase() {
             assertEquals("Get workflow failed", RestStatus.FORBIDDEN.status, e.response.statusLine.statusCode)
         } finally {
             deleteRoleAndRoleMapping(TEST_HR_ROLE)
+            deleteRoleMapping(ALERTING_FULL_ACCESS_ROLE)
             deleteUser(getUser)
             getUserClient?.close()
         }
@@ -444,6 +445,7 @@ class SecureWorkflowRestApiIT : AlertingRestTestCase() {
         } catch (e: ResponseException) {
             assertEquals("Create workflow failed", RestStatus.FORBIDDEN.status, e.response.statusLine.statusCode)
         } finally {
+            deleteRoleMapping(ALERTING_FULL_ACCESS_ROLE)
             deleteUser(userWithDifferentRole)
             userWithDifferentRoleClient?.close()
         }
@@ -1101,6 +1103,7 @@ class SecureWorkflowRestApiIT : AlertingRestTestCase() {
             assertEquals("Delete workflow failed", RestStatus.OK, response?.restStatus())
         } finally {
             deleteRoleAndRoleMapping(TEST_HR_ROLE)
+            deleteRoleMapping(ALERTING_FULL_ACCESS_ROLE)
             deleteUser(deleteUser)
             deleteUserClient?.close()
         }