Add written permission to the dep-manifests dir

[tenzen-y]

It seems that the scheduler-plugins Charts have only read permission. So we must add written permission to that.

Before:

$ ll -a dep-manifests/scheduler-plugins/
total 24
drwxr-xr-x  7 tenzen-y  1796141739   224 Apr  6 01:44 ./
drwxr-xr-x  3 tenzen-y  1796141739    96 Apr  6 01:44 ../
-r--r--r--  1 tenzen-y  1796141739  1138 Apr  6 01:44 Chart.yaml
-r--r--r--  1 tenzen-y  1796141739  3171 Apr  6 01:44 README.md
drwxr-xr-x  7 tenzen-y  1796141739   224 Apr  6 01:44 crds/
dr-xr-xr-x  7 tenzen-y  1796141739   224 Apr  6 01:44 templates/
-r--r--r--  1 tenzen-y  1796141739  1237 Apr  6 01:44 values.yaml

After:

ll -a dep-manifests/scheduler-plugins/
total 24
drwxrw----  7 tenzen-y  1796141739   224 Apr  6 01:46 ./
drwxr-xr-x  3 tenzen-y  1796141739    96 Apr  6 01:46 ../
-rwxrw----  1 tenzen-y  1796141739  1138 Apr  6 01:46 Chart.yaml*
-rwxrw----  1 tenzen-y  1796141739  3171 Apr  6 01:46 README.md*
drwxrw----  7 tenzen-y  1796141739   224 Apr  6 01:46 crds/
drwxrw----  7 tenzen-y  1796141739   224 Apr  6 01:46 templates/
-rwxrw----  1 tenzen-y  1796141739  1237 Apr  6 01:46 values.yaml*

Fixes: #546

[google-oss-prow[bot]]

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