Distribution EOLE

Workaround freeradius reload bug when service is disabled

We need a “policy-rc.d” script to disable the reload command for that
particular service.

• tmpl/policy-rc.d: Script to exclude the command for freeradius. It's
  generic enougth to support other services as needed.

• dicos/00_common.xml: Install script in all containers.

Ref: #21207

Install policy-rc.d script in preinst

This permit to fix upgrade for server already in troubles because of
freeradius.

• debian/eole-common-pkg.preinst: Create a policy script.

• debian/eole-common-pkg.postrm: Remove the policy script.

For 2.6.0

Ref: #21207

Install policy-rc.d script in preinst

This permit to fix upgrade for server already in troubles because of
freeradius.

• debian/eole-common-pkg.preinst: Create a policy script.

• debian/eole-common-pkg.postrm: Remove the policy script.

Cherry pick for 2.6.2 from 19c832d02ff0d038c6ea29f56604729061b75965

Ref: #21207

policy-rc.d created by package must exit with 104 to execute command

Otherwise the invoke-rc.d exits with the return code but run nothing
as defined in invoke-rc.d source code:

queries policy database
    returns: $RC = 104 - ok, run
             $RC = 101 - ok, do not run
           other - exit with status $RC, maybe run if $RETRY
             initial status of $RC is taken into account.

• debian/eole-common-pkg.preinst: Update script with content of
  tmpl/policy-rc.d.

For 2.6.0

Ref: #21207

policy-rc.d created by package must exit with 104 to execute command

Otherwise the invoke-rc.d exits with the return code but run nothing
as defined in invoke-rc.d source code:

queries policy database
    returns: $RC = 104 - ok, run
             $RC = 101 - ok, do not run
           other - exit with status $RC, maybe run if $RETRY
             initial status of $RC is taken into account.

• debian/eole-common-pkg.preinst: Update script with content of
  tmpl/policy-rc.d.

Cherry picked for 2.6.2 from 6f6c8b2a95fd2a590ffac4a1453772424b7527db

Ref: #21207