Merge ~smoser/cloud-init:bug/1674766-ds-identify-bigstep into cloud-init:master

[Scott Moser]

ds-identify: fix detection of Bigstep datasource.

The path for checking presence of Bigstep datasource was simply wrong.
Set the correct path.

LP: #1674766

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:29f601cc363ee1f5cf2458e5ad1be4ae7517aa57
https://jenkins.ubuntu.com/server/job/cloud-init-ci/154/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/cloud-init-ci/nodes=metal-amd64/154
    SUCCESS: https://jenkins.ubuntu.com/server/job/cloud-init-ci/nodes=metal-arm64/154
    SUCCESS: https://jenkins.ubuntu.com/server/job/cloud-init-ci/nodes=metal-ppc64el/154
    SUCCESS: https://jenkins.ubuntu.com/server/job/cloud-init-ci/nodes=metal-s390x/154
    SUCCESS: https://jenkins.ubuntu.com/server/job/cloud-init-ci/nodes=vm-i386/154

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/cloud-init-ci/154/rebuild

review: Approve (continuous-integration)

diff --git a/tools/ds-identify b/tools/ds-identify
index 6f1e983..b3220c1 100755
--- a/tools/ds-identify
+++ b/tools/ds-identify
@@ -633,7 +633,8 @@ dscheck_Azure() {
 
 dscheck_Bigstep() {
     # bigstep is activated by presense of seed file 'url'
-    check_seed_dir "bigstep" url && return ${DS_FOUND}
+    [ -f "${PATH_VAR_LIB_CLOUD}/data/seed/bigstep/url" ] &&
+        return ${DS_FOUND}
     return ${DS_NOT_FOUND}
 }