Cache go/analysis facts

Don't load unneeded packages for go/analysis.
Repeated run of go/analysis linters now 10x faster
(2s vs 20s on this repo) than before.

Author: jirfag

.golangci.yml

@@ -11,7 +11,7 @@ linters-settings:
   golint:
     min-confidence: 0
   gocyclo:
-    min-complexity: 10
+    min-complexity: 15
   maligned:
     suggest-new: true
   dupl:
@@ -86,7 +86,7 @@ linters:
 run:
   skip-dirs:
     - test/testdata_etc
-    - pkg/golinters/goanalysis/(checker|passes)
+    - internal/(cache|renameio|robustio)
 
 issues:
   exclude-rules:

go.sum

@@ -187,7 +187,6 @@ github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40T
 github.com/quasilyte/go-consistent v0.0.0-20190521200055-c6f3937de18c/go.mod h1:5STLWrekHfjyYwxBRVRXNOSewLJ3PWfDJd1VyTS21fI=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rogpeppe/go-internal v1.1.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/securego/gosec v0.0.0-20190912120752-140048b2a218 h1:O0yPHYL49quNL4Oj2wVq+zbGMu4dAM6iLoOQtm49TrQ=