gitlab-ci: add yamllint job

tests/build/info.guardianproject.urzip/.fdroid.yml

@@ -1,4 +1,3 @@
-
 Summary: This should be overridden by metadata/info.guardianproject.urzip.yml
 Builds:
   - versionCode: 50

tests/metadata/duplicate.permisssions.yml

@@ -1,4 +1,4 @@
 Categories:
-- tests
+  - tests
 Name: Duplicate Permisssions
 Summary: 'Test app for all possible <uses-permissions>'

tests/metadata/info.guardianproject.urzip.yml

@@ -3,10 +3,10 @@ AutoUpdateMode: None
 Bitcoin: 1Fi5xUHiAPRKxHvyUGVFGt9extBe8Srdbk
 OpenCollective: f-droid-just-testing
 Categories:
-- Development
-- GuardianProject
-- 1
-- 2.0
+  - Development
+  - GuardianProject
+  - 1
+  - 2.0
 CurrentVersionCode: 2147483647
 AuthorWebSite: https://guardianproject.info
 Description: |

tests/metadata/info.zwanenburg.caffeinetile.yml

@@ -1,4 +1,4 @@
 Categories:
-- Development
+  - Development
 Name: Caffeine Tile
 Summary: Test app for extracting icons when an XML one is default

tests/metadata/org.videolan.vlc.yml

@@ -317,7 +317,7 @@ Builds:
     prebuild: sed -i '/ant/d' ../Makefile && ln -s vlc-android/$$VLC-2.2$$ ../vlc
     build: cd ../ && ANDROID_ABI=armeabi-v7a ./compile.sh release
 
-#0.9.10 vercodes were off
+  # 0.9.10 vercodes were off
   - versionName: 1.0.0
     versionCode: 10006
     disable: doesn't build
@@ -328,7 +328,7 @@ Builds:
     prebuild: sed -i '/ant/d' ../Makefile && ln -s vlc-android/$$VLC-2.2$$ ../vlc
     build: cd ../ && ANDROID_ABI=x86 ./compile.sh release
 
-#0.9.10 vercodes were off
+  # 0.9.10 vercodes were off
   - versionName: 1.0.0
     versionCode: 10007
     disable: doesn't build
@@ -339,7 +339,7 @@ Builds:
     prebuild: sed -i '/ant/d' ../Makefile && ln -s vlc-android/$$VLC-2.2$$ ../vlc
     build: cd ../ && ANDROID_ABI=armeabi ./compile.sh release
 
-#0.9.10 vercodes were off
+  # 0.9.10 vercodes were off
   - versionName: 1.0.0
     versionCode: 10008
     disable: doesn't build