e2e-tests: Replace hardcoded scheme with property

Replace the previously hardcoded scheme for http requests with the new
http_scheme property. The core framework documentation [1] now includes
how it can be used to (e.g.) switch test scenarios from http to https.

[1] https://gerrit-review.googlesource.com/c/gerrit/+/275453/1/Documentation/dev-e2e-tests.txt

Change-Id: Ief4950ccbd9908f8d7f9d79bbef45160cef484fd
diff --git a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.json b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.json
index 34d4ca0..f15ddae 100644
--- a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.json
+++ b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.json
@@ -1,6 +1,6 @@
 [
   {
-    "url": "http://HOSTNAME:HTTP_PORT1/_PROJECT",
+    "url": "HTTP_SCHEME://HOSTNAME:HTTP_PORT1/_PROJECT",
     "cmd": "clone"
   }
 ]
diff --git a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateChangeUsingMultiGerrit.json b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateChangeUsingMultiGerrit.json
index c267ab3..7b0454a 100644
--- a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateChangeUsingMultiGerrit.json
+++ b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateChangeUsingMultiGerrit.json
@@ -1,6 +1,6 @@
 [
   {
-    "url": "http://HOSTNAME:HTTP_PORT/a/changes/",
+    "url": "HTTP_SCHEME://HOSTNAME:HTTP_PORT/a/changes/",
     "project": "_PROJECT"
   }
 ]
diff --git a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateProjectUsingMultiGerrit.json b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateProjectUsingMultiGerrit.json
index 40e5a45..cd90739 100644
--- a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateProjectUsingMultiGerrit.json
+++ b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/CreateProjectUsingMultiGerrit.json
@@ -1,5 +1,5 @@
 [
   {
-    "url": "http://HOSTNAME:HTTP_PORT/a/projects/PROJECT"
+    "url": "HTTP_SCHEME://HOSTNAME:HTTP_PORT/a/projects/PROJECT"
   }
 ]
diff --git a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteChangeUsingMultiGerrit1.json b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteChangeUsingMultiGerrit1.json
index 4b7f52e..4a49f07 100644
--- a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteChangeUsingMultiGerrit1.json
+++ b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteChangeUsingMultiGerrit1.json
@@ -1,6 +1,6 @@
 [
   {
-    "url": "http://HOSTNAME:HTTP_PORT1/a/changes/",
+    "url": "HTTP_SCHEME://HOSTNAME:HTTP_PORT1/a/changes/",
     "number": "NUMBER"
   }
 ]
diff --git a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteProjectUsingMultiGerrit.json b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteProjectUsingMultiGerrit.json
index 7cc8293..5720f53 100644
--- a/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteProjectUsingMultiGerrit.json
+++ b/src/test/resources/com/googlesource/gerrit/plugins/multisite/scenarios/DeleteProjectUsingMultiGerrit.json
@@ -1,5 +1,5 @@
 [
   {
-    "url": "http://HOSTNAME:HTTP_PORT/a/projects/PROJECT/delete-project~delete"
+    "url": "HTTP_SCHEME://HOSTNAME:HTTP_PORT/a/projects/PROJECT/delete-project~delete"
   }
 ]