golangci-lint: Disable ifElseChain go-critic rule

Disable the ifElseChain rule of the go-critic linter because it isn't of
the taste of Storj.

Change-Id: I26a36d32061c0675e5ec1e4e95e243b2b5af1e46

.golangci.yml

@@ -75,6 +75,9 @@ linters-settings:
     #  2. you use go >= 1.10
     #  3. you do repeated runs (false for CI) or cache $GOPATH/pkg or `go env GOCACHE` dir in CI.
     use-installed-packages: false
+  gocritic:
+    disabled-checks:
+      - ifElseChain
   goimports:
     local: "storj.io"
   golint: