Extract workflows dependencies

- Move build dependencies moved to
  `.github/workflows/build-dependencies.txt` shared among workflows.

- Change `ubuntu-latest` -> `ubuntu-20.04` to avoid unexpected
  runner environment updates in `zloop` workflow.

- Change `ubuntu-20.04` -> `ubuntu-latest` to track changes in
  runner environment in `checkstyle` workflow.

- Kernel buffer is flushed before ZTS invocation to avoid storing
  the same data after each test case run.

- `make` is invoked with consistent set of options to reduce
  clutter in logs.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #13037

.github/workflows/build-dependencies.txt

@@ -0,0 +1,48 @@
+acl
+alien
+attr
+autoconf
+bc
+build-essential
+curl
+dbench
+fakeroot
+fio
+gdb
+gdebi
+git
+ksh
+lcov
+libacl1-dev
+libaio-dev
+libattr1-dev
+libblkid-dev
+libcurl4-openssl-dev
+libdevmapper-dev
+libelf-dev
+libffi-dev
+libmount-dev
+libpam0g-dev
+libselinux-dev
+libssl-dev
+libtool
+libudev-dev
+lsscsi
+mdadm
+nfs-kernel-server
+pamtester
+parted
+python3
+python3-cffi
+python3-dev
+python3-packaging
+python3-setuptools
+rng-tools
+samba
+sysstat
+uuid-dev
+watchdog
+wget
+xfslibs-dev
+xz-utils
+zlib1g-dev