CI: build against Honister until release

oe-core has branched Honister off and master is taking breaking changes.
As we're still stabilising for release, we should pin to the honister
branches where possible.

Change-Id: Icb05bee45dcc88ca9cbac72b7c18cbaeb89a7491
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/base.yml

@@ -5,7 +5,7 @@ distro: poky
 
 defaults:
   repos:
-    refspec: master
+    refspec: honister
 
 repos:
   meta-arm:

ci/clang.yml

@@ -4,6 +4,7 @@ header:
 repos:
   meta-clang:
     url: https://github.com/kraj/meta-clang
+    refspec: master
 
 local_conf_header:
   clang: |

ci/meta-zephyr.yml

@@ -6,3 +6,4 @@ header:
 repos:
   meta-zephyr:
     url: https://git.yoctoproject.org/git/meta-zephyr
+    refspec: master