Bazel: Clean up configuration options

De-duplicate options for local and remote build configurations.
Note, though, that we don't re-use build_shared configuration for
default build configuration, e.g.: build --config=build_shared to
avoid these confusing warnings during the build, when building
non default configurations, e.g.:

$ bazel build --config=java11 java/com/google/gerrit/common:server
[...] WARNING:
option '--java_language_version' was expanded to from both option
'--config=build_shared' (source /home/davido/projects/gerrit2/.bazelrc)
and option '--config=java11' (source command line options)

Also remove unused remote-cache configuration options.

Release-Notes: skip
Change-Id: Ia557c949227b3038cbd62e4a0a3bad0f17d42218

.bazelrc

@@ -3,31 +3,35 @@ build --repository_cache=~/.gerritcodereview/bazel-cache/repository
 build --action_env=PATH
 build --disk_cache=~/.gerritcodereview/bazel-cache/cas
 
-# Builds using remotejdk_11, executes using remotejdk_11 or local_jdk
-build:java11 --java_language_version=11
-build:java11 --java_runtime_version=remotejdk_11
-build:java11 --tool_java_language_version=11
-build:java11 --tool_java_runtime_version=remotejdk_11
+# Define configuration using remotejdk_11, executes using remotejdk_11 or local_jdk
+build:build_shared --java_language_version=11
+build:build_shared --java_runtime_version=remotejdk_11
+build:build_shared --tool_java_language_version=11
+build:build_shared --tool_java_runtime_version=remotejdk_11
 
-# Builds using remotejdk_17, executes using remotejdk_17 or local_jdk
-build --java_language_version=17
-build --java_runtime_version=remotejdk_17
-build --tool_java_language_version=17
-build --tool_java_runtime_version=remotejdk_17
+# Builds using remotejdk_11, executes using remotejdk_11 or local_jdk
+# Avoid warnings for non default configurations:
+# build --config=build_shared
+build --java_language_version=11
+build --java_runtime_version=remotejdk_11
+build --tool_java_language_version=11
+build --tool_java_runtime_version=remotejdk_11
 
 # Builds and executes on RBE using remotejdk_11
-build:remote11 --java_language_version=11
-build:remote11 --java_runtime_version=remotejdk_11
-build:remote11 --tool_java_language_version=11
-build:remote11 --tool_java_runtime_version=remotejdk_11
-build:remote11 --config=remote_shared
+build:remote --config=remote_shared
+build:remote --config=build_shared
+
+# Define configuration using remotejdk_17, executes using remotejdk_17 or local_jdk
+build:build_java17_shared --java_language_version=17
+build:build_java17_shared --java_runtime_version=remotejdk_17
+build:build_java17_shared --tool_java_language_version=17
+build:build_java17_shared --tool_java_runtime_version=remotejdk_17
+
+build:java17 --config=build_java17_shared
 
 # Builds and executes on RBE using remotejdk_17
-build:remote --java_language_version=17
-build:remote --java_runtime_version=remotejdk_17
-build:remote --tool_java_language_version=17
-build:remote --tool_java_runtime_version=remotejdk_17
-build:remote --config=remote_shared
+build:remote17 --config=remote_shared
+build:remote17 --config=build_java11_shared
 
 # Enable strict_action_env flag to. For more information on this feature see
 # https://groups.google.com/forum/#!topic/bazel-discuss/_VmRfMyyHBk.

tools/remote-bazelrc

@@ -56,10 +56,3 @@ build:remote_shared --remote_timeout=3600
 # default. You can use --auth_credentials=some_file.json to use a service
 # account credential instead.
 build:remote_shared --google_default_credentials
-
-# The following flags enable the remote cache so action results can be shared
-# across machines, developers, and workspaces.
-build:remote-cache --remote_cache=remotebuildexecution.googleapis.com
-build:remote-cache --tls_enabled=true
-build:remote-cache --remote_timeout=3600
-build:remote-cache --auth_enabled=true