Export parser.Keywords() and add GetDictForFuzzParseExpr() so that
the corpus generator can produce a stable fuzzParseExpr.dict file
derived directly from the PromQL grammar rather than maintained by hand.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
Add a new FuzzParseProtobuf fuzz target that exercises the protobuf
exposition-format parser
Reduce per-target fuzz time to 4m to keep budget acceptable with
the additional target.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
