ci: print version after install & fix apparmor support on build_apparmor

[kmk3]

The "build_apparmor" job was added on commit 342e71c ("Add
deb-apparmor build to Gitlab CI", 2019-01-26). It would call
./mkdeb-apparmor.sh, which would run ./configure --enable-apparmor
directly, adding -lapparmor to EXTRA_LDFLAGS and thus passing it to
the linker.

Later, commit 87e7b31 ("Configure Debian package with AA and SELinux
options", 2020-05-13) / PR #3414 merged mkdeb.sh and mkdeb-apparmor.sh
into mkdeb.sh.in, which does not always pass --enable-apparmor to
./configure directly. Instead, it adds --enable-apparmor depending on
whether the $HAVE_APPARMOR environment variable is set, which would be
done by a previous run of ./configure with --enable-apparmor. Since
on "build_apparmor" ./configure is not run the first time with
--enable-apparmor, neither is it on the second time and thus
-lapparmor is never passed to the linker. This commit adds
--enable-apparmor to the first ./configure run on the ci job, so that
it gets passed to the one being executed on mkdeb.sh as well.

[kmk3]

Depends on #5147.

[kmk3]

By the way, I'm working on make dist improvements that include making
mkdeb.sh not run ./configure anymore. That along with #5142 should make dist a
lot simpler.

[kmk3]

For completeness, here is the relevant output of running build_apparmor on
each commit on GitLab CI:

• 6a89ab0 ("ci: run firejail --version after build/install", 2022-05-16)

$ ./configure --prefix=/usr && make deb-apparmor && dpkg -i firejail*.deb
[...]
$ command -V firejail && firejail --version
firejail is /usr/bin/firejail
firejail version 0.9.69
Compile time support:
	- always force nonewprivs support is disabled
	- AppArmor support is disabled
	- AppImage support is enabled
	- chroot support is enabled
	- D-BUS proxy support is enabled
	- file transfer support is enabled
	- firetunnel support is enabled
	- networking support is enabled
	- output logging is enabled
	- overlayfs support is disabled
	- private-home support is enabled
	- private-cache and tmpfs as user enabled
	- SELinux support is disabled
	- user namespace support is enabled
	- X11 sandboxing support is enabled
Cleaning up project directory and file based variables 00:00
Job succeeded

• 428e068 ("gitlab-ci: check for apparmor support on build_apparmor",
  2022-05-16)

$ ./configure --prefix=/usr && make deb-apparmor && dpkg -i firejail*.deb
[...]
$ command -V firejail && firejail --version
firejail is /usr/bin/firejail
firejail version 0.9.69
Compile time support:
	- always force nonewprivs support is disabled
	- AppArmor support is disabled
	- AppImage support is enabled
	- chroot support is enabled
	- D-BUS proxy support is enabled
	- file transfer support is enabled
	- firetunnel support is enabled
	- networking support is enabled
	- output logging is enabled
	- overlayfs support is disabled
	- private-home support is enabled
	- private-cache and tmpfs as user enabled
	- SELinux support is disabled
	- user namespace support is enabled
	- X11 sandboxing support is enabled
$ firejail --version | grep -F 'AppArmor support is enabled'
Cleaning up project directory and file based variables 00:01
ERROR: Job failed: exit code 1

• 1f671ab ("gitlab-ci: actually link libapparmor on build_apparmor",
  2022-05-15)

$ ./configure --prefix=/usr --enable-apparmor && make deb-apparmor && dpkg -i firejail*.deb
[...]
$ command -V firejail && firejail --version
firejail is /usr/bin/firejail
firejail version 0.9.69
Compile time support:
	- always force nonewprivs support is disabled
	- AppArmor support is enabled
	- AppImage support is enabled
	- chroot support is enabled
	- D-BUS proxy support is enabled
	- file transfer support is enabled
	- firetunnel support is enabled
	- networking support is enabled
	- output logging is enabled
	- overlayfs support is disabled
	- private-home support is enabled
	- private-cache and tmpfs as user enabled
	- SELinux support is disabled
	- user namespace support is enabled
	- X11 sandboxing support is enabled
$ firejail --version | grep -F 'AppArmor support is enabled'
	- AppArmor support is enabled
Cleaning up project directory and file based variables 00:01
Job succeeded