Show importing a GPG pub key for all Client OS

The location of GPG public keys differ between EL, SLES, and
Debian/Ubuntu.

affects nightly to at least 3.12

Fixes a broken link on https://docs.orcharhino.com/or/docs/sources/guides/ubuntu/managing_content/importing_content.html#Extracting_GPG_Public_Key_Fingerprints_from_Release_Files_content-management

Author: maximiliankolb

guides/common/modules/proc_importing-a-custom-gpg-key.adoc

@@ -10,8 +10,8 @@ endif::[]
 
 To use the CLI instead of the {ProjectWebUI}, see the xref:cli-importing-a-gpg-key[].
 
-ifdef::client-content-dnf[]
 .Prerequisites
+ifdef::client-content-dnf[]
 Ensure that you have a copy of the GPG key used to sign the RPM content that you want to use and manage in {Project}.
 Most RPM distribution providers provide their GPG Key on their website.
 You can also extract this manually from an RPM:
@@ -31,9 +31,14 @@ $ rpm2cpio _example-9.5-2.noarch.rpm_ | cpio -idmv
 
 The GPG key is located relative to the extraction at `etc/pki/rpm-gpg/RPM-GPG-KEY-_EXAMPLE-95_`.
 endif::[]
+ifndef::client-content-dnf[]
+* Extract the GPG public key fingerprints from a signed `Release` file for Deb content.
+For more information, see xref:Extracting_GPG_Public_Key_Fingerprints_from_Release_Files_{context}[].
+endif::[]
 
 .Procedure
-. In the {ProjectWebUI}, navigate to *Content* > *Content Credentials* and in the upper-right of the window, click *Create Content Credential*.
+. In the {ProjectWebUI}, navigate to *Content* > *Content Credentials*.
+. Click *Create Content Credential*.
 . Enter the name of your repository and select *GPG Key* from the *Type* list.
 . Either paste the GPG key into the *Content Credential Contents* field, or click *Browse* and select the GPG key file that you want to import.
 +
@@ -60,12 +65,16 @@ Wl5GnzcLGAnUSRamfqGUWcyMMinHHIKIc1X1P4I=
 
 [id="cli-importing-a-gpg-key"]
 .CLI procedure
-
 . Copy the GPG key to your {ProjectServer}:
 +
 [options="nowrap" subs="+quotes,attributes"]
 ----
+ifdef::client-content-dnf[]
 $ scp ~/etc/pki/rpm-gpg/RPM-GPG-KEY-_EXAMPLE-95_ root@{foreman-example-com}:~/.
+endif::[]
+ifndef::client-content-dnf[]
+$ scp ~/_My_GPG_Public_Key_ root@{foreman-example-com}:~/.
+endif::[]
 ----
 . Upload the GPG key to {Project}:
 +
@@ -75,5 +84,10 @@ $ hammer content-credentials create \
 --content-type gpg_key \
 --name "_My_GPG_Key_" \
 --organization "_My_Organization_" \
+ifdef::client-content-dnf[]
 --path ~/RPM-GPG-KEY-_EXAMPLE-95_
+endif::[]
+ifndef::client-content-dnf[]
+--path ~/_My_GPG_Public_Key_
+endif::[]
 ----