fixup: Remove duplicate tests and fix escaping expectations after rebase

During the rebase of the sealing-impl branch onto main, some test
functions that existed in both the PR and main (from cherry-picks)
ended up duplicated. This removes the sync duplicates in favor of
main's async versions in repository.rs, removes duplicate CLI
integration tests, fixes a dumpfile escape expectation (named
escapes vs hex escapes), and adds a missing import in privileged.rs.

Author: cgwalters

crates/composefs-oci/src/lib.rs

@@ -950,9 +950,9 @@ mod test {
             "\
 / 0 40755 6 0 0 0 0.0 - - -
 /etc 0 40755 2 0 0 0 0.0 - - -
-/etc/hostname 9 100644 1 0 0 0 0.0 - testhost\\x0a -
-/etc/os-release 23 100644 1 0 0 0 0.0 - ID\\x3dtest\\x0aVERSION_ID\\x3d1.0\\x0a -
-/etc/passwd 34 100644 1 0 0 0 0.0 - root:x:0:0:root:/root:/usr/bin/sh\\x0a -
+/etc/hostname 9 100644 1 0 0 0 0.0 - testhost\\n -
+/etc/os-release 23 100644 1 0 0 0 0.0 - ID=test\\nVERSION_ID=1.0\\n -
+/etc/passwd 34 100644 1 0 0 0 0.0 - root:x:0:0:root:/root:/usr/bin/sh\\n -
 /tmp 0 40755 2 0 0 0 0.0 - - -
 /usr 0 40755 5 0 0 0 0.0 - - -
 /usr/bin 0 40755 2 0 0 0 0.0 - - -
@@ -961,7 +961,7 @@ mod test {
 /usr/bin/cp 7 120777 1 0 0 0 0.0 busybox - -
 /usr/bin/ls 7 120777 1 0 0 0 0.0 busybox - -
 /usr/bin/mv 7 120777 1 0 0 0 0.0 busybox - -
-/usr/bin/myapp 25 100755 1 0 0 0 0.0 - #!/usr/bin/sh\\x0aecho\\x20hello\\x0a -
+/usr/bin/myapp 25 100755 1 0 0 0 0.0 - #!/usr/bin/sh\\necho\\x20hello\\n -
 /usr/bin/rm 7 120777 1 0 0 0 0.0 busybox - -
 /usr/bin/sh 7 120777 1 0 0 0 0.0 busybox - -
 /usr/lib 0 40755 2 0 0 0 0.0 - - -