apparmor: allow compiling and testing on non-Linux

[thaJeztah]

While AppArmor only applies to Linux platforms, the code in this module is largely platform-agnostic (with the exception of the apparmor utilities not being present).

Remove the Linux build-tags to allow running the unit-tests on other platforms.

With this patch:

go -C ./apparmor/ test -v
=== RUN   TestInstallDefault
    apparmor_test.go:148: requires root
--- SKIP: TestInstallDefault (0.00s)
=== RUN   TestIsLoaded
=== RUN   TestIsLoaded/loaded
=== RUN   TestIsLoaded/loaded_with_spaces
=== RUN   TestIsLoaded/not_loaded
=== RUN   TestIsLoaded/error
--- PASS: TestIsLoaded (0.00s)
    --- PASS: TestIsLoaded/loaded (0.00s)
    --- PASS: TestIsLoaded/loaded_with_spaces (0.00s)
    --- PASS: TestIsLoaded/not_loaded (0.00s)
    --- PASS: TestIsLoaded/error (0.00s)
=== RUN   TestGenerateDefault
=== RUN   TestGenerateDefault/default
=== RUN   TestGenerateDefault/default/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-api3
=== RUN   TestGenerateDefault/with-api3/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-tunables
=== RUN   TestGenerateDefault/with-tunables/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-abstractions-base
=== RUN   TestGenerateDefault/with-abstractions-base/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-daemon-profile
=== RUN   TestGenerateDefault/with-daemon-profile/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-spaces
=== RUN   TestGenerateDefault/with-spaces/validate
    apparmor_test.go:311: apparmor_parser not available
=== RUN   TestGenerateDefault/with-custom-imports
=== RUN   TestGenerateDefault/with-custom-inner-imports
=== RUN   TestGenerateDefault/with-special-characters
=== RUN   TestGenerateDefault/with-special-characters/validate
    apparmor_test.go:311: apparmor_parser not available
--- PASS: TestGenerateDefault (0.00s)
    --- PASS: TestGenerateDefault/default (0.00s)
        --- SKIP: TestGenerateDefault/default/validate (0.00s)
    --- PASS: TestGenerateDefault/with-api3 (0.00s)
        --- SKIP: TestGenerateDefault/with-api3/validate (0.00s)
    --- PASS: TestGenerateDefault/with-tunables (0.00s)
        --- SKIP: TestGenerateDefault/with-tunables/validate (0.00s)
    --- PASS: TestGenerateDefault/with-abstractions-base (0.00s)
        --- SKIP: TestGenerateDefault/with-abstractions-base/validate (0.00s)
    --- PASS: TestGenerateDefault/with-daemon-profile (0.00s)
        --- SKIP: TestGenerateDefault/with-daemon-profile/validate (0.00s)
    --- PASS: TestGenerateDefault/with-spaces (0.00s)
        --- SKIP: TestGenerateDefault/with-spaces/validate (0.00s)
    --- PASS: TestGenerateDefault/with-custom-imports (0.00s)
    --- PASS: TestGenerateDefault/with-custom-inner-imports (0.00s)
    --- PASS: TestGenerateDefault/with-special-characters (0.00s)
        --- SKIP: TestGenerateDefault/with-special-characters/validate (0.00s)
=== RUN   TestGenerateProfileName
    apparmor_test.go:321: apparmor_parser not available: exec: "apparmor_parser": executable file not found in $PATH
--- SKIP: TestGenerateProfileName (0.00s)
=== RUN   TestCleanProfileName
=== RUN   TestCleanProfileName/empty
=== RUN   TestCleanProfileName/unconfined
=== RUN   TestCleanProfileName/unconfined_newline
=== RUN   TestCleanProfileName/unconfined_enforce
=== RUN   TestCleanProfileName/unconfined_enforce_newline
=== RUN   TestCleanProfileName/simple
=== RUN   TestCleanProfileName/simple_enforce
=== RUN   TestCleanProfileName/spaces
=== RUN   TestCleanProfileName/parentheses_in_name
=== RUN   TestCleanProfileName/unknown_mode
--- PASS: TestCleanProfileName (0.00s)
    --- PASS: TestCleanProfileName/empty (0.00s)
    --- PASS: TestCleanProfileName/unconfined (0.00s)
    --- PASS: TestCleanProfileName/unconfined_newline (0.00s)
    --- PASS: TestCleanProfileName/unconfined_enforce (0.00s)
    --- PASS: TestCleanProfileName/unconfined_enforce_newline (0.00s)
    --- PASS: TestCleanProfileName/simple (0.00s)
    --- PASS: TestCleanProfileName/simple_enforce (0.00s)
    --- PASS: TestCleanProfileName/spaces (0.00s)
    --- PASS: TestCleanProfileName/parentheses_in_name (0.00s)
    --- PASS: TestCleanProfileName/unknown_mode (0.00s)
=== RUN   TestQuotePeerName
=== RUN   TestQuotePeerName/empty
=== RUN   TestQuotePeerName/simple
=== RUN   TestQuotePeerName/spaces
=== RUN   TestQuotePeerName/double_quote
=== RUN   TestQuotePeerName/backslash
=== RUN   TestQuotePeerName/escape_sequence
=== RUN   TestQuotePeerName/AARE_wildcard
=== RUN   TestQuotePeerName/AARE_character_class
=== RUN   TestQuotePeerName/AARE_alternation
=== RUN   TestQuotePeerName/AARE_anchor
=== RUN   TestQuotePeerName/invalid_UTF-8_with_special_character
--- PASS: TestQuotePeerName (0.00s)
    --- PASS: TestQuotePeerName/empty (0.00s)
    --- PASS: TestQuotePeerName/simple (0.00s)
    --- PASS: TestQuotePeerName/spaces (0.00s)
    --- PASS: TestQuotePeerName/double_quote (0.00s)
    --- PASS: TestQuotePeerName/backslash (0.00s)
    --- PASS: TestQuotePeerName/escape_sequence (0.00s)
    --- PASS: TestQuotePeerName/AARE_wildcard (0.00s)
    --- PASS: TestQuotePeerName/AARE_character_class (0.00s)
    --- PASS: TestQuotePeerName/AARE_alternation (0.00s)
    --- PASS: TestQuotePeerName/AARE_anchor (0.00s)
    --- PASS: TestQuotePeerName/invalid_UTF-8_with_special_character (0.00s)
PASS
ok  	github.com/moby/profiles/apparmor	0.238s

[Copilot]

Copilot review overview

🟢 Approval recommended

The platform-specific operations are appropriately guarded while portable functionality remains testable.

Review effort: Balanced
Findings: None

What changed in this PR

Enables the AppArmor package and its platform-agnostic tests to compile and run on non-Linux systems.

Changes:

• Removes the Linux build constraint from the AppArmor implementation.
• Adds portable unit tests while conditionally skipping Linux-specific integration checks.

File	Description
apparmor/​apparmor.go	Makes the implementation available across platforms.
apparmor/​apparmor_test.go	Adds unit, integration, golden, and benchmark coverage.

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