Update depguard rules to prevent breaking CGO_ENABLED=0 (#47298)

* Update depguard rules to prevent breaking CGO_ENABLED=0

The integrations binaries should be able to compile without CGO,
however, a recent change introduced a dependency that required CGO
(#47045). This was
fixed in #47172,
however there were no safety measure put in place to prevent it
from happening again in the future.

This updates the existing CGO depguard rules to apply to all files
under integrations in addition to denying lib/config which requires
CGO by way of lib/pam and lib/backend/lite.

* sort cgo rules alphabetically and include backend/lite

* only depguard integrations and not lib/integrations

.golangci.yml

@@ -155,29 +155,35 @@ linters-settings:
           - "!$test"
           - '**/tool/tbot/**'
           - '**/lib/client/**'
+          - '!**/lib/integrations/**'
+          - '**/integrations/**'
         deny:
+          - pkg: github.com/gravitational/teleport/lib/bpf
+            desc: '"lib/bpf" requires CGO'
+          - pkg: github.com/gravitational/teleport/lib/backend/lite
+            desc: '"lib/backend/lite" requires CGO'
+          - pkg: github.com/gravitational/teleport/lib/cgroup
+            desc: '"lib/cgroup" requires CGO'
+          - pkg: github.com/gravitational/teleport/lib/config
+            desc: '"lib/config" requires CGO via "lib/pam" and "lib/backend/lite"'
+          - pkg: github.com/gravitational/teleport/lib/desktop/rdp/rdpclient
+            desc: '"lib/desktop/rdp/rdpclient" requires CGO'
           - pkg: github.com/gravitational/teleport/lib/devicetrust/authn$
-            desc: '"devicetrust/authn" requires CGO on darwin'
+            desc: '"lib/devicetrust/authn" requires CGO on darwin'
           - pkg: github.com/gravitational/teleport/lib/devicetrust/enroll
-            desc: '"devicetrust/enroll" requires CGO on darwin'
+            desc: '"lib/devicetrust/enroll" requires CGO on darwin'
           - pkg: github.com/gravitational/teleport/lib/devicetrust/native
-            desc: '"devicetrust/native" requires CGO on darwin'
-          - pkg: github.com/gravitational/teleport/lib/bpf
-            desc: '"lib/bpf" requires CGO'
-          - pkg: github.com/gravitational/teleport/lib/vnet/daemon
-            desc: '"vnet/daemon" requires CGO'
-          - pkg: github.com/gravitational/teleport/lib/system/signal
-            desc: '"lib/system/signal" requires CGO'
+            desc: '"lib/devicetrust/native" requires CGO on darwin'
           - pkg: github.com/gravitational/teleport/lib/inventory/metadata
             desc: '"lib/inventory/metadata" requires CGO'
-          - pkg: github.com/gravitational/teleport/lib/desktop/rdp/rdpclient
-            desc: '"lib/desktop/rdp/rdpclient" requires CGO'
           - pkg: github.com/gravitational/teleport/lib/pam
             desc: '"lib/pam" requires CGO'
           - pkg: github.com/gravitational/teleport/lib/srv/uacc
             desc: '"lib/srv/uacc" requires CGO'
-          - pkg: github.com/gravitational/teleport/lib/cgroup
-            desc: '"lib/cgroup" requires CGO'
+          - pkg: github.com/gravitational/teleport/lib/system/signal
+            desc: '"lib/system/signal" requires CGO'
+          - pkg: github.com/gravitational/teleport/lib/vnet/daemon
+            desc: '"vnet/daemon" requires CGO'
   errorlint:
     comparison: true
     asserts: true