Skip calling verify_package_compatibility when resuming.

android::vintf::VintfObjectRecovery::CheckCompatibility() may try to
mount partitions in order to read the needed files, which may not be
feasible when resuming an interrupted update. This CL changes the logic
to enforce compatibility check on fresh install only.

Fix: 122864541
Test: Sideloading on taimen keeps working.
Test: Sideload a package by setting the retry bit. Check that
      compatibility check is skipped.
Change-Id: I018a0c802c85a0e84a6f2aac50630a677d64382a

install.cpp

@@ -606,8 +606,8 @@ static int really_install_package(const std::string& path, bool* wipe_cache, boo
     return INSTALL_CORRUPT;
   }
 
-  // Additionally verify the compatibility of the package.
-  if (!verify_package_compatibility(zip)) {
+  // Additionally verify the compatibility of the package if it's a fresh install.
+  if (retry_count == 0 && !verify_package_compatibility(zip)) {
     log_buffer->push_back(android::base::StringPrintf("error: %d", kPackageCompatibilityFailure));
     return INSTALL_CORRUPT;
   }