software/grafana: version up grafana v7.5.2 and loki v2.2.0

also:
 - install logcli for convenience / debugging
 - no longer set golang version here, now that 1.16 is the default

software/grafana/software.cfg

@@ -35,13 +35,13 @@ part = python3
 <= go-git-package
 go.importpath = github.com/grafana/grafana
 repository    = https://github.com/grafana/grafana
-revision      = v7.4.3-0-g010f20c1c8
+revision      = v7.5.2-0-gca413c612f
 
 [go_github.com_grafana_loki]
 <= go-git-package
 go.importpath = github.com/grafana/loki
 repository    = https://github.com/grafana/loki
-revision      = v2.1.0-188-g877f524c36
+revision      = v2.2.0-0-ga27c7991
 
 [go_github.com_influxdata_influxdb]
 <= go-git-package
@@ -60,12 +60,10 @@ revision      = v1.17.3-0-g24a552b90b
 install =
   ${go_github.com_grafana_loki:location}:./cmd/loki
   ${go_github.com_grafana_loki:location}:./cmd/promtail
+  ${go_github.com_grafana_loki:location}:./cmd/logcli
   ${go_github.com_influxdata_telegraf:location}:./cmd/...
   ${go_github.com_influxdata_influxdb:location}:./cmd/...
 
-# use recent go
-golang = ${golang1.16:location}
-
 # disable cgo, to prevent loki/promtail from using go-systemd
 environment =
   CGO_ENABLED = 0