scripts: minor improvements (#8930)

* CI: enable 'latest' docker tag on master pipeline

* CI: mark both beta and stable as stable snap.

* CI: sign all windows binaries

.gitlab-ci.yml

@@ -201,6 +201,7 @@ docker-build:
   stage: build
   only:
     - tags
+    - master
     - beta
     - stable
     - triggers

scripts/gitlab-build.sh

@@ -165,6 +165,10 @@ make_pkg () {
 }
 sign_exe () {
   ./sign.cmd $keyfile $certpass "target/$PLATFORM/release/parity.exe"
+  ./sign.cmd $keyfile $certpass "target/$PLATFORM/release/parity-evm.exe"
+  ./sign.cmd $keyfile $certpass "target/$PLATFORM/release/ethstore.exe"
+  ./sign.cmd $keyfile $certpass "target/$PLATFORM/release/ethkey.exe"
+  ./sign.cmd $keyfile $certpass "target/$PLATFORM/release/whisper.exe"
 }
 make_exe () {
   ./msbuild.cmd
@@ -325,7 +329,7 @@ case $BUILD_PLATFORM in
     snapcraft clean
     echo "Prepare snapcraft.yaml for build on Gitlab CI in Docker image"
     sed -i 's/git/'"$VER"'/g' snap/snapcraft.yaml
-    if [[ "$CI_BUILD_REF_NAME" = "beta" || "$VER" == *1.11* ]];
+    if [[ "$CI_BUILD_REF_NAME" = "stable" || "$CI_BUILD_REF_NAME" = "beta" || "$VER" == *1.10* || "$VER" == *1.11* ]];
       then
         sed -i -e 's/grade: devel/grade: stable/' snap/snapcraft.yaml;
     fi