Update install/uninstall/package list command in inst.*.py
[wrt]update xwalkctl to pkgcmd
Impacted TCs num(approved): New 0, update 24, deleted 0
Unit test platform: [tizen]
Test Result:

wrt-packagemgt-tizen-tests: pass 8, fail 0 ,block 7
wrt-digitalsign-tizen-tests:pass 1, fail 0 ,block 1
wrt-packertool-tizen-tests: pass 3, fail 0 ,block 0
wrt-rtbin-tizen-tests       pass 4, fail 0 ,block 0
Merge pull request #1029 from linshen/shenlin/update-xwalk-to-pkgcmd-by-auto

[wrt]update xwalkctl to pkgcmd
[wrt] Update xwalkctl to pkgcmd
Merge pull request #1035 from kangxu/kangxu/wrt/tct-appwgt-wrt-tests/updateCmd

[wrt] Update xwalkctl to pkgcmd
Remove config.xml.* in suite.json

 -For those suites which run in service
[misc] Update xwalkctl to pkgcmd

- Update xwalkctl install/uninstall to pkgcmd
Remove install method

 -for those suites which do not need install pkg
Merge pull request #1036 from haoxli/haoxli/misc/xwalkctl2pkgcmd

[misc] Update xwalkctl to pkgcmd
Merge pull request #1037 from Honry/Honry/inst-py/update-xwalkctl-command

Honry/inst py/update xwalkctl command
[wrt][XWALK-2579]remove xwalkctl -i/-u to pkgcmd
Merge pull request #1038 from linshen/shenlin/update-xwalk-to-pkgcmd-by-manu1

[wrt][XWALK-2579]remove xwalkctl -i/-u to pkgcmd