direct: resolve ${resources.<group>.<key>.<field>} for fields present in the config (#3466)

## Changes
- All resource references now add edge to the graph.
- The references that point to a path in config are resolved based on
the config at plan time.
- New package: structaccess that fetches a given path from struct.

## Tests
- resource_var tests disabled in
#3443 are now passing.
- non existent field test added in
#3481 now shows correct error.
- internal field reference test added in
#3491 now shows correct error in
direct mode.

Author: denik

acceptance/bundle/bundle_tag/url_ref/out.deploy.direct-exp.txt

@@ -1,5 +1,9 @@
 Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/test-bundle/default/files...
-Error: reading config: failed to read references from config for jobs.bar: parsing refs: cannot process reference resources.jobs.foo.url: only ${resources.<group>.<key>.id} references are supported
+Error: cannot resolve ${resources.jobs.foo.url}: url: field "url" not found in resources.Job
+
+Error: cannot plan jobs.bar: dependency failed: jobs.foo
+
+Error: planning failed
 
 
 Exit code: 1

acceptance/bundle/bundle_tag/url_ref/out.plan.direct-exp.txt

@@ -1,4 +1,8 @@
-Error: reading config: failed to read references from config for jobs.bar: parsing refs: cannot process reference resources.jobs.foo.url: only ${resources.<group>.<key>.id} references are supported
+Error: cannot resolve ${resources.jobs.foo.url}: url: field "url" not found in resources.Job
+
+Error: cannot plan jobs.bar: dependency failed: jobs.foo
+
+Error: planning failed
 
 
 Exit code: 1

acceptance/bundle/resource_deps/non_existent_field/out.deploy.direct-exp.txt

@@ -1,5 +1,9 @@
 Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/test-bundle/default/files...
-Error: reading config: failed to read references from config for volumes.foo: parsing refs: cannot process reference resources.volumes.bar.non_existent: only ${resources.<group>.<key>.id} references are supported
+Error: cannot resolve ${resources.volumes.bar.non_existent}: non_existent: field "non_existent" not found in resources.Volume
+
+Error: cannot plan volumes.foo: dependency failed: volumes.bar
+
+Error: planning failed
 
 
 Exit code (musterr): 1

acceptance/bundle/resource_deps/non_existent_field/out.plan.direct-exp.txt

@@ -1,4 +1,8 @@
-Error: reading config: failed to read references from config for volumes.foo: parsing refs: cannot process reference resources.volumes.bar.non_existent: only ${resources.<group>.<key>.id} references are supported
+Error: cannot resolve ${resources.volumes.bar.non_existent}: non_existent: field "non_existent" not found in resources.Volume
+
+Error: cannot plan volumes.foo: dependency failed: volumes.bar
+
+Error: planning failed
 
 
 Exit code (musterr): 1

acceptance/bundle/resource_deps/resources_var/out.deploy.direct-exp.txt

@@ -1,4 +1,5 @@
 trace $CLI bundle validate -t dev -o json | jq .resources
-trace errcode $CLI bundle deploy -t dev &> out.deploy.$DATABRICKS_CLI_DEPLOYMENT.txt
-trace jq -s '.[] | select(.path=="/api/2.0/pipelines") | .body.name' out.requests.txt &> out.requests.$DATABRICKS_CLI_DEPLOYMENT.txt
+trace errcode $CLI bundle deploy -t dev &> out.deploy.txt
+trace jq -s '.[] | select(.path=="/api/2.0/pipelines") | .body.name' out.requests.txt &> tmp.requests.txt
 rm out.requests.txt
+mv tmp.requests.txt out.requests.txt