This change has two major parts, which were interwoven enough to do
them in one change:
1) make serverinit.Config fully opaque, in prep for TOML configs #1134
2) shrink the massive server/perkeepd/camlistored.go file. It was out
of control and had a bunch of code that better belonged
elsewhere. This change moves a few hundred lines of code from
camlistored.go into more logical places: internal/osutil/gce for
GCE stuff, serverinit for config stuff (KeyRingAndId), etc.
I also added a TODO to make it possible to compile perkeepd without
any GCE stuff, which I saw as a possible and worthy goal only after
moving everything away.
Updates #1134
Change-Id: Iea6f84c5aca9c70b97806f4a201ec35e0f630e3b
make the "REDACTED" placeholder a valid JSON string and include trailing
comma in attempt to make the document valid JSON (primarily helpful with
browser extensions that parse and render JSON documents, even though the
content type is text/plain).
Add client_secret to the list of redacted keys (used with google cloud
storage, possibly others).
Change-Id: Ia10fc9fffbd667ea7018b750b2a98db0b05dcf82
Brad Fitzpatrick