vm_setup.sh currently depends on package managers to determine which
SPDK dependencies must be installed, however, this may cause issues on
systems which provide more than one package manager, e.g., dnf and
yum. Due to that fact, some packages were missing since they were
bound to a specific package manager instead of the distribution, case
and point, nbd. Also, some OS-dependent steps had to be duplicated,
like repo refresh on Centos8, since either of the managers could be
in use.
To address the above, allow for souring of OS-based routines to
overwrite defaults set based on given package manager.
Change-Id: I0d8d88dea4521e9c76b187c69743e4e09aa724e6
Signed-off-by: Michal Berger <michalx.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4017
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>