Bump gometalinter to v2.0.6

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

hack/dockerfile/install/gometalinter.installer

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-GOMETALINTER_COMMIT=bfcc1d6942136fd86eb6f1a6fb328de8398fbd80
+GOMETALINTER_COMMIT=v2.0.6
 
 install_gometalinter() {
 	echo "Installing gometalinter version $GOMETALINTER_COMMIT"