Merge branch 'lineage-21.0' of gitlab.e.foundation:e/os/android_frameworks_base into v1-u

import java.io.IOException;

import java.io.PrintWriter;

import java.nio.charset.StandardCharsets;

import java.security.cert.CertificateException;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collection;

            if (isSystemApp(packageInfo.applicationInfo)) {

                generateFakeSignature(p).ifPresent(fakeSignature -> {

                    packageInfo.signatures = new Signature[]{fakeSignature};

                    try {

                        packageInfo.signingInfo = new SigningInfo(

                                new SigningDetails(

                                    new Signature[] {fakeSignature},

                                        packageInfo.signatures,

                                        SigningDetails.SignatureSchemeVersion.SIGNING_BLOCK_V3,

                                    null,

                                        SigningDetails.toSigningKeys(packageInfo.signatures),

                                        null

                                )

                        );

                    } catch (CertificateException e) {

                        Slog.e(TAG, "Caught an exception when creating signing keys: ", e);

                    }

                });

            }