Increase timeout value for ironic-base job

Using the new dib images generally increased the execution time of
all jobs that use them, so we increase the general timeout value to
900 seconds to try and reduce the number of failures caused by
timeout.

Change-Id: I67e712fc78d5df83c4feb737635537e789d448be

zuul.d/ironic-jobs.yaml

@@ -32,13 +32,13 @@
         FORCE_CONFIG_DRIVE: True
         INSTALL_TEMPEST: False # Don't install a tempest package globaly
         VIRT_DRIVER: ironic
-        BUILD_TIMEOUT: 720
+        BUILD_TIMEOUT: 900
         IRONIC_BAREMETAL_BASIC_OPS: True
         IRONIC_BUILD_DEPLOY_RAMDISK: False
         IRONIC_CALLBACK_TIMEOUT: 600
         IRONIC_DEPLOY_DRIVER: ipmi
         IRONIC_INSPECTOR_BUILD_RAMDISK: False
-        IRONIC_TEMPEST_BUILD_TIMEOUT: 720
+        IRONIC_TEMPEST_BUILD_TIMEOUT: 900
         IRONIC_TEMPEST_WHOLE_DISK_IMAGE: False
         IRONIC_VM_COUNT: 1
         IRONIC_VM_EPHEMERAL_DISK: 1
@@ -243,8 +243,6 @@
       # Excluding the abort tests since it hits "node locked" too often.
       tempest_test_regex: test_baremetal_introspection
       devstack_localrc:
-        BUILD_TIMEOUT: 900
-        IRONIC_TEMPEST_BUILD_TIMEOUT: 900
         IRONIC_BOOT_MODE: bios
         IRONIC_INSPECTOR_MANAGED_BOOT: True
         IRONIC_INSPECTOR_NODE_NOT_FOUND_HOOK: ''
@@ -327,12 +325,6 @@
     timeout: 5400
     vars:
       devstack_localrc:
-        # This test runs cleaning by default, and with a larger
-        # IPA image means that it takes longer to boot for deploy
-        # and cleaning. As such, CI performance variations can
-        # cause this job to fail easily due to the extra steps
-        # and boot cycle of the cleaning operation.
-        IRONIC_TEMPEST_BUILD_TIMEOUT: 850
         IRONIC_DEFAULT_BOOT_OPTION: netboot
 
 - job:
@@ -683,7 +675,6 @@
         IRONIC_DEFAULT_DEPLOY_INTERFACE: direct
         IRONIC_DIB_RAMDISK_OS: centos8
         IRONIC_TEMPEST_WHOLE_DISK_IMAGE: True
-        IRONIC_TEMPEST_BUILD_TIMEOUT: 900
         IRONIC_VM_EPHEMERAL_DISK: 0
         IRONIC_VM_INTERFACE_COUNT: 1
         IRONIC_AUTOMATED_CLEAN_ENABLED: False