build: configure branch java7 as a release branch (#931)

enable releases

Author: Neenu1995

.github/release-please.yml

@@ -7,6 +7,14 @@ branches:
     releaseType: java-lts
     branch: 1.22.0-sp
     extraFiles:
-      - google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/Version.java
+      - >-
+        google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/Version.java
+  - bumpMinorPreMajor: true
+    handleGHRelease: true
+    releaseType: java-yoshi
+    extraFiles:
+      - >-
+        google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/Version.java
+    branch: java7
 extraFiles:
   - google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/Version.java

.github/sync-repo-settings.yaml

@@ -32,6 +32,21 @@ branchProtectionRules:
       - units (11)
       - 'Kokoro - Test: Integration'
       - cla/google
+  - pattern: java7
+    isAdminEnforced: true
+    requiredApprovingReviewCount: 1
+    requiresCodeOwnerReviews: true
+    requiresStrictStatusChecks: false
+    requiredStatusCheckContexts:
+      - dependencies (8)
+      - dependencies (11)
+      - linkage-monitor
+      - lint
+      - clirr
+      - units (8)
+      - units (11)
+      - 'Kokoro - Test: Integration'
+      - cla/google
 permissionRules:
   - team: yoshi-admins
     permission: admin