[apparmor] support symlinked /snap

Just hardcoding /var/lib/snapd since this goes away with strict anyway.

Author: Saviq

src/platform/backends/qemu/dnsmasq_process_spec.cpp

@@ -91,7 +91,7 @@ profile %1 flags=(attach_disconnected) {
   %3/{usr/,}lib/@{multiarch}/{,**/}*.so* rm,
 
   # CLASSIC ONLY: need to specify required libs from core snap
-  /snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
+  {,/var/lib/snapd}/snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
 
   %5/dnsmasq.leases rw,           # Leases file
   %5/dnsmasq.hosts r,             # Hosts file

src/platform/backends/qemu/qemu_vm_process_spec.cpp

@@ -234,7 +234,7 @@ profile %1 flags=(attach_disconnected) {
   %4/{,usr/}lib/{,@{multiarch}/}{,**/}*.so* rm,
 
   # CLASSIC ONLY: need to specify required libs from core snap
-  /snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
+  {,/var/lib/snapd}/snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
 
   # Disk images
   %6 rwk,  # QCow2 filesystem image

src/platform/backends/shared/linux/qemuimg_process_spec.cpp

@@ -50,7 +50,7 @@ profile %1 flags=(attach_disconnected) {
   %3/{usr/,}lib/@{multiarch}/{,**/}*.so* rm,
 
   # CLASSIC ONLY: need to specify required libs from core snap
-  /snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
+  {,/var/lib/snapd}/snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
 
   # Subdirectory containing disk image(s)
   %5/** rwk,

src/platform/backends/shared/sshfs_server_process_spec.cpp

@@ -110,7 +110,7 @@ profile %1 flags=(attach_disconnected) {
     %3/{usr/,}lib/** rm,
 
     # CLASSIC ONLY: need to specify required libs from core snap
-    /snap/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
+    {,/var/lib/snapd}/core18/*/{,usr/}lib/@{multiarch}/{,**/}*.so* rm,
 
     # allow full access just to this user-specified source directory on the host
     %4/ rw,