component/replication-manager: pin golang to 1.16

when using golang 1.17 build fail with errors like:

    github.com/jacobsa/fuse/internal/buffer.memclr: relocation target runtime.memclrNoHeapPointers not defined for ABI0 (but is defined for ABIInternal)

component/replication-manager/buildout.cfg

@@ -9,6 +9,9 @@ parts =
 install =
 buildflags =  -v --tags server --ldflags "-extldflags 'static' -w -s -X main.GoOS=linux -X main.GoArch=amd64 -X main.Version=2.1 -X main.FullVersion=$FULLVERSION -X main.Build=$(date +%FT%T%z) -X main.WithProvisioning=ON -X main.WithOpenSVC=OFF -X main.WithHaproxy=ON -X main.WithMaxscale=ON  -X main.WithMariadbshardproxy=ON -X  main.WithProxysql=ON -X  main.WithSphinx=ON -X main.WithArbitration=OFF -X main.WithArbitrationClient=ON -X main.WithMonitoring=ON -X main.WithHttp=ON -X main.WithBackup=ON -X main.WithMail=ON -X main.WithEnforce=ON -X main.WithDeprecate=ON"
 
+# replication-manager does not build on golang 1.17
+golang = ${golang1.16:location}
+
 [gowork.goinstall]
 depends_gitfetch  =
     ${git.signal18.io_signal18_repman:recipe}