Update installation guidelines
Update installation guidelines

Added missing installation guidelines for Debian 11, Ubuntu 22.04 and RHEL9
in the release notes.

Fix #3055

Also, replaced most of the GPG keys with a `xxxxxxxx` pattern. This pattern
is replaced with the appropriate GPG key value when generating the final
release notes.

In addition, rearranged the sections ; a fedora section was in middle of
ubuntu sections.

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Signed-off-by: Erwan Prioul <9949cc68615082c237e6af925cacbd2ea7f2e953@linux.ibm.com>

advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain