CI: increase healthcheck interval for VNF-PNF deployment

The healthcheck interval sets when the first health check occurs after the
container starts. Increasing the healthcheck interval helps avoid marking
the container as "healthy" during the initialization phase of PNF. In
particular, USRP initialization of PNF service may take longer, and deployment
failures can occur even after the 10 seconds interval. Extending the healtcheck
interval provides more time for the service before assessing container health.

ci-scripts/yaml_files/5g_sa_n310_4x4_60MHz/docker-compose.yml

@@ -16,7 +16,7 @@ services:
             - ../../conf_files/gnb-vnf.sa.band77.162prb.nfapi.4x4.conf:/opt/oai-gnb/etc/gnb.conf
         healthcheck:
             test: /bin/bash -c "pgrep nr-softmodem"
-            interval: 10s
+            interval: 15s
             timeout: 5s
             retries: 5
     oai-pnf:
@@ -36,6 +36,6 @@ services:
             - ../../conf_files/gnb-pnf.band77.usrpn310.4x4.conf:/opt/oai-gnb/etc/gnb.conf
         healthcheck:
             test: /bin/bash -c "pgrep nr-softmodem"
-            interval: 10s
+            interval: 15s
             timeout: 5s
             retries: 5