The files gb-nsw-{configuration-timer,configuration,maintenance} were
not actually chapters, but sub-chapters or sub-sub-chapters. This
breaks our general idea that all of those files are top-level chapters.
It also breaks asciidoc validation on Debian 11:
asciidoc: WARNING: gb-ns2-configuration.adoc: line 1: section title out of sequence: expected level 1, got level 2
asciidoc: WARNING: gb-ns2-maintenance.adoc: line 6: section title out of sequence: expected level 2, got level 3
the only place where they were used was the osmo-gbproxy manual, and
there in the exact sequenc in which I now merged them over here.
Change-Id: I3c618e5af61b376435f400ef9c64245cec2f9b73
Merge gb-variants.adoc into gb-ns2.adoc
Add a general overview of the internal structure which is also used
by the vty.
Move the configuration into a seperate adoc to allow the PCU manual to skip
the part which doesn't apply for it.
Copy the timer configuration into gb.adoc to allow document newer
timers. All users of the NS2 code will use the timer sub-chapter.
Related: OS#5077
Change-Id: I902b850528cbc04bd469590babd84cccf64300e8
Harald Welte
Alexander Couzens