Description of problem:
Though https://bugzilla.redhat.com/show_bug.cgi?id=1317778 is fixed, web console still does not set TERM, causing less, top not work well.


Version-Release number of selected component (if applicable):
openshift v3.3.0.19

How reproducible:
Always

Steps to Reproduce:
1. On web console, click Applications --> Pods --> frontend-2-wu20y --> Terminal
2. After entering web terminal's shell, run:
sh-4.2$ top
TERM environment variable not set
sh-4.2$ less /etc/hosts
WARNING: terminal is not full functional
/etc/hosts (press RETURN)

If we press Enter, `less` can show the content of /etc/hosts, though

3. Set TERM manually, run top and less again
sh-4.2$ export TERM=xterm
sh-4.2$ top
sh-4.2$ less /etc/hosts

Actual results:
2. As stated in step inline.
3. top and less work well

Expected results:
2. It is better to automatically set TERM in web terminal like under CLI terminal. CLI terminal results are:
[tester@pc_vm3 oc]$ oc rsh frontend-2-wu20y
sh-4.2$ less /etc/hosts
# Kubernetes-managed hosts file.
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
<snipped>

sh-4.2$ top

top - 08:37:49 up 1 day,  5:45,  0 users,  load average: 0.18, 0.24, 0.37
Tasks:   7 total,   1 running,   6 sleeping,   0 stopped,   0 zombie
<snipped>


Additional info: