[2.x] Run AnalysisFormatBenchmark during CI

[Friendseeker]

With this PR

• AnalysisFormatBenchmark is run automatically during CI similar to other benchmarks.
• Benchmarks are run against PR target branch instead of hardcoded 1.10.x/develop branch

[Friendseeker]

I guess things rarely work the first try...

[info] Error wrapping InputStream in GZIPInputStream: java.util.zip.ZipException: Not in GZIP format
[info] 	at sbt.internal.io.ErrorHandling$.translate(ErrorHandling.scala:21)
[info] 	at sbt.io.WrapUsing.open(Using.scala:44)
[info] 	at sbt.io.Using.apply(Using.scala:26)
[info] 	at sbt.internal.inc.consistent.ConsistentFileAnalysisStore$AStore.unsafeGet(ConsistentFileAnalysisStore.scala:105)
[info] 	at xsbt.AnalysisFormatBenchmark.read(AnalysisFormatBenchmark.scala:138)
[info] 	at xsbt.AnalysisFormatBenchmark.readAll$$anonfun$1(AnalysisFormatBenchmark.scala:128)
[info] 	at scala.collection.Iterator$$anon$9.next(Iterator.scala:584)
[info] 	at scala.collection.mutable.Growable.addAll(Growable.scala:62)
[info] 	at scala.collection.mutable.Growable.addAll$(Growable.scala:57)
[info] 	at scala.collection.immutable.MapBuilderImpl.addAll(Map.scala:710)
[info] 	at scala.collection.immutable.Map$.from(Map.scala:661)
[info] 	at scala.collection.IterableOnceOps.toMap(IterableOnce.scala:1462)
[info] 	at scala.collection.IterableOnceOps.toMap$(IterableOnce.scala:1461)
[info] 	at scala.collection.AbstractIterator.toMap(Iterator.scala:1303)
[info] 	at xsbt.AnalysisFormatBenchmark.readAll(AnalysisFormatBenchmark.scala:128)
[info] 	at xsbt.AnalysisFormatBenchmark.setup(AnalysisFormatBenchmark.scala:38)

[Friendseeker]

I guess things rarely work the first try...

Figured out how to fix it. Shall start forward porting after wrapping up #1419.

The reason is that we removed binary analysis format, and hence the zips in test data are now text format analysis and we need to change one line in benchmark code to read the zips properly