Change modes to string values
Change modes to string values

Currently deploying a MON fails with "bad symbolic permission for mode"
errors due to the file/directory modes not being interpreted as octal
values.  This commit updates roles/ceph-common/tasks/main.yml to set
the file/directory modes to strings so they can be interpreted
correctly.

Closes issue #525

mcsage/ceph-ansible,bengland2/ceph-ansible,albertomurillo/ceph-ansible,albertomurillo/ceph-ansible,guits/ceph-ansible,travmi/ceph-ansible,fgal/ceph-ansible,verdurin/ceph-ansible-1,rootfs/ceph-ansible,jfcoz/ceph-ansible,fgal/ceph-ansible,verdurin/ceph-ansible-1,jsaintrocc/ceph-ansible,font/ceph-ansible,ceph/ceph-ansible,rootfs/ceph-ansible,albertomurillo/ceph-ansible,dang/ceph-ansible,lejonet/ansible-ceph-common,PiotrProkop/ceph-ansible,jfcoz/ceph-ansible,jtaleric/ceph-ansible,ceph/ceph-ansible,jsaintrocc/ceph-ansible,mcsage/ceph-ansible,dang/ceph-ansible,PiotrProkop/ceph-ansible,WingkaiHo/ceph-ansible,WingkaiHo/ceph-ansible,guits/ceph-ansible,jtaleric/ceph-ansible,font/ceph-ansible,WingkaiHo/ceph-ansible,bengland2/ceph-ansible,travmi/ceph-ansible