Fix timeout issue of pti-rtp release job

The pti-rtp-shell-release-master job is to build and push  artifacts of
pti-rtp project to nexus3 repo. The building time takes longer time than
expected, so we have to increase the timeout to 48 hours
according to the building stats: it takes 35hours with building 70% of image.

https://jenkins.o-ran-sc.org/view/pti-rtp/job/pti-rtp-shell-release-master/2/

Issue-ID: INF-182
Signed-off-by: Bin Yang <bin.yang@windriver.com>
Change-Id: I65a0e8282285ca5a23591775015dc68164ca1bdb
diff --git a/jjb/pti-rtp/pti-rtp.yaml b/jjb/pti-rtp/pti-rtp.yaml
index 7a79582..4991caa 100644
--- a/jjb/pti-rtp/pti-rtp.yaml
+++ b/jjb/pti-rtp/pti-rtp.yaml
@@ -54,8 +54,8 @@
     name: pti-rtp-release-merge
     # demand 200GB storage
     build-node: centos7-docker-2c-8g-200g
-    # runs about 35 hours
-    build-timeout: 2100
+    # runs about 48 hours
+    build-timeout: 2880
     script: !include-raw-escape:
         - install-yocto-prereq-centos.sh
         - build-inf.sh