Use Go 1.10 for source installations

doc/install/installation.md

@@ -155,11 +155,11 @@ page](https://golang.org/dl).
     # Remove former Go installation folder
     sudo rm -rf /usr/local/go
     
-    curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
-    echo '1862f4c3d3907e59b04a757cfda0ea7aa9ef39274af99a784f5be843c80c6772  go1.8.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
-      sudo tar -C /usr/local -xzf go1.8.3.linux-amd64.tar.gz
+    curl --remote-name --progress https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz
+    echo 'fa1b0e45d3b647c252f51f5e1204aba049cde4af177ef9f2181f43004f901035  go1.10.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
+      sudo tar -C /usr/local -xzf go1.10.3.linux-amd64.tar.gz
     sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
-    rm go1.8.3.linux-amd64.tar.gz
+    rm go1.10.3.linux-amd64.tar.gz
 
 ## 4. Node
 

doc/update/10.8-to-11.0.md

@@ -81,8 +81,8 @@ More information can be found on the [yarn website](https://yarnpkg.com/en/docs/
 
 ### 5. Update Go
 
-NOTE: GitLab 9.2 and higher only supports Go 1.8.3 and dropped support for Go
-1.5.x through 1.7.x. Be sure to upgrade your installation if necessary.
+NOTE: GitLab 11.0 and higher only supports Go 1.9.x and newer, and dropped support for Go
+1.5.x through 1.8.x. Be sure to upgrade your installation if necessary.
 
 You can check which version you are running with `go version`.
 
@@ -92,11 +92,11 @@ Download and install Go:
 # Remove former Go installation folder
 sudo rm -rf /usr/local/go
 
-curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
-echo '1862f4c3d3907e59b04a757cfda0ea7aa9ef39274af99a784f5be843c80c6772  go1.8.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
-  sudo tar -C /usr/local -xzf go1.8.3.linux-amd64.tar.gz
+curl --remote-name --progress https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz
+echo 'fa1b0e45d3b647c252f51f5e1204aba049cde4af177ef9f2181f43004f901035  go1.10.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
+  sudo tar -C /usr/local -xzf go1.10.3.linux-amd64.tar.gz
 sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
-rm go1.8.3.linux-amd64.tar.gz
+rm go1.10.3.linux-amd64.tar.gz
 ```
 
 ### 6. Get latest code